CONSIDER THE FOLLOWING DESCRIPTION OF A SYSTEM IN A UNIVERSITY

A student enters a course registration into a process called Validate Registration. The Validate Registration process checks the registration data store for perquisites and sends an Invalid Registration message to a Display registration error messages process, which in turn displays the Invalid Registration message for the user to see. Valid Registrations are sent to an Update Registration process which updates the Registration data store, and updates the Billing data store. The Prepare Bill process reads Bill Information from the Billing Data store and sends it to the Print Bills process which prints a copy of the bill for use by the student. You can decide on appropriate data flow names where required.

Required: Draw a context and Level 0 DFD that represents the system described above. [Context Diagram 15 pts + Level-0 Diagram 25 pts]

(Hint: In order to answer this question, you have to identify the 4 dfd symbols, and decide which ones belong to context, and Level 0 diagrams. Some symbols may belong to both diagrams)