1. Compare data flow diagrams from Chapter 7 to process data flow diagrams in this chapter. List five similarities and five differences between them. 2. What is a 'promoted relationship' in an...

1. Compare data flow diagrams from Chapter 7 to process data flow diagrams in this chapter. List five similarities and five differences between them.

2. What is a 'promoted relationship' in an ERD and what is the result of the promotion?

May 26, 2022