MGMT 340 Week 4 - Problems and Exercises

MGMT 340 Week 4 - Problems and Exercises

Chapter 7

5. Consider the E-R diagram in Figure 7-20. Based onthis E-R diagram, answer the following questions:

a. How  many  EMPLOYEES  can  work  on  aproject?

b. What is the degree of the Used_on relationship?

c. Do any associative entities appear in this diagram? If so, name them.

d. How else could the attribute Skill be modeled?

e. What  attributes  might  be  attached  to  theWorks_on relationship?

f. Could  TOOL  be  modeled  as  an  associativeentity? Why or why not?

16. The owner of two pizza parlors located in adjacent towns wants to computerize and integratesales  transactions  and  inventory  managementwithin and between both stores. The point-of-salecomponent  must  be  easy  to  use  and  flexibleenough  to  accommodate  a  variety  of  pricingstrategies and coupons. The inventory management,  which  will  be  linked  to  the  point-of-salecomponent,  must  also  be  easy  to  use  and  fast.The systems at each store need to be linked sothat sales and inventory levels can be determinedinstantly for each store and for both stores combined. The owner can allocate $40,000 for hardware and $20,000 for software and must have thenew system operational in three months. Training must be short and easy. Briefly describe threealternative systems for this situation and explainhow each would meet the requirements and constraints.  Are  the requirements  and  constraintsrealistic? Why or why not?

17. Compare the alternative systems from Problemand Exercise 16 using the weighted approachdemonstrated in Figure 7-19. Which systemwould you recommend? Why? Was the approachtaken in this and Problem and Exercise 16 usefuleven for this relatively small system? Why orwhy not?