1. Develop DFD fragments for all of the events not documented in Figure.

2. Develop a single DFD that shows processing for all events, using one process for each subsystem and showing all needed data stores. To simplify the diagram, place all external agents along the outer edge, and duplicate them as necessary to minimize long or crossing data flows. Place all data stores in the middle of the diagram.
3. Develop a data flow definition for the RMO customer order form in Figure.

This chapter contains many DFDs describing the RMO order-entry subsystem but no DFDs describing the RMO order fulfillment subsystem, customer maintenance subsystem, or catalog maintenance subsystem. Review the RMO event table and ERD and perform the followingtasks:

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