1. Develop a context diagram and a top-level DFD to model the data flows involved in registering for classes at your college or university. Then model the student registration system in a use case diagram and write a textual description for one of the use cases.

Hint: Refer to Figures 8.11 and 8.13 in the textbook

(50 points)

2. Discuss the differences between data stores on a DFD and an entity-relationship diagram for the same information system application. What purpose does each serve? What does each explain or show that the other does not?

(50 points)

ot Invoices ACCOUNTING Payable ACCOUNTS PAYABLE VENDOR Pu Vendor Iaf rchase Onders Stock PURCHASING Chocks Jected Inv FRIGURE 8.11 Context Dlagram Tor Accounts Payable System