4 datebase management questions



      

 



    



 

 





 

 



                

           





  

  

   

                

                  

         



      

         

                    



    



  

   



                 





 





 



 



   

 



 

 





 

  

 









  





 



 



 

 

  





   



 



  



   

    

 

 



  

 





    

     

           

               

        

   

    

   

    

      

         

    

   

  

 

   





   

 

 

 

 

 







   

   

 

    

     



    

     

       

   



  



  





 







 

 



 





   

 

      

  

               

  





    





     





   



 

 



    

 













   

   

 

    

    

        

   





     



 

 





  









 











   

  



        



          

         

   



  





  







  

 

 



 



 







   



   



  



   

       



      

          

            



 

 



     



 

 

 





   



   

   

   

       



         

   



   



  



  





 

 

 







 

  

 







 

 



   











 

    

 







   

 

     

     

   

     





    

 

 



 



 



 

 



 

 





  

  

  

  

  

   



       

      

        

        

 



 







 

 

   



 



 

 



 





   

   

  

         

         

   

      





   



  

 

 







  



 





 

   

     

  



      

     

 

  

 

     

      

        

           

              



















 









 

 





 

 

 





















  

 



















 

 























 















 

   



 



































 













 

 













  



   

  

       

    

        

        



                  

        

     



   





 

 





































 







 

















 









  







   

 







  











  



     

                               

   

             

          

       



       













 







  

   

 

                

     

      

                                         



  

   

                               



        

         

  

             

   

 

                                            

    

       

   

                            



                                   

     

 

  

  



  







    

   

  







 



 







  











   

 

 



 



 







   





 





 

 

  

  



  







    







 





 

 



 

  

     

                      

   

 

                             

            

  

 

  

 

 

    

  

  

 

 

                        

 

























































   

   

 

   

   

 









































































































 

 

 

 

 



 

 

 













































































  



   

  

   

   

               

   

        

                 

     

            

          

                

     

          

         



   

          





        

 

   

    

  

  



              

             

          

             

  

    

      

  

          

                    

            

                               

          

  

 

   

  

   

  

    



         

            

   

              

     

    

                  

           

   

             

        

    

    

   

  

       

                            

   

                  

   

   

   

           

             

      

   

                    

      

          

     

     

                 

  

  

  

    

        

  

  

          

         

  

  

   

   

     

             

   

       

   

      

  

             

                

     

     

  

   

 

            

    

                   

                     

  

                                                

                                    

   



                    

        

     

        

               

       



  

  

   

  

  

     

        

   

  

           

  



  

        

  

        

  

         

          

           

     

        

   



    

      

   

      

          

        

                  

    

         

   







            

                   

                       

                  

               

 

                      

               

                        

    

     

   

  



   





  

   

  



  

  

 

 

 

 

   

 

     







 

















      









 

 

 

 

 

 

 

 

   

    

  

 



          

     

                 

    

    

                   

       



    

               

  

   

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

  



  

    



     

  

  

   

       

                      

  

   

    

                     

       







     





 





 

 



           

      



  