Practical Connection Assignment

How can a "Dissertation seminar "course in PhD course help a Database administrator ?

Explain in detail day to day roles and responsibilities of DBA (Database Administrator) and how they are related to the course of " Dissertation seminar "?

NOTE: Currently I am doing Dissertation on topic Internet of things If you can add few points on it 

Note: Please establish and explain the practical connection between the course and the Job

Please write 400 to 500 words