Assignment-2: These are the Four basic Symbols of DFD Source/ Sink Data Flow Marks 5+10=15 Process #Data Store a) Now Take a look to the Context Level Diagram of a Course Registration System Class roster Professor Class Request 0 Student Payment Receipt Course Registration System Student Schedule Enrollment statistics Registrar b) Consider Another Order System where Source/Sinks: Customer, Warehouse, Sales Dept, Bank Accounting Process: Fill Order, Create Invoice, Apply Payment Data Store: Accounts Receivable Data Flow: Order, Order Reject Notice, Invoice, Payment, Picking List, Completed Order, Payment Detail, Invoice Detail, Commission, Bank Deposit, Cash Receipts Entry. Now Draw a DFD Level 0 Diagram for the given information