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Complete Systems Analysis: The Workbook, the Textbook, the Answers by Tom DeMarco, James Robertson, Suzanne Robertson

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4.7. Solutions: Event-Response Models

Exercise 1: Dentist Performs Service

Image

Figure 4.7.1: The essential event-response process model for event 4 Dentist performs service.

The essential activity for the system is to record the services that have been performed. The service takes place outside the system; both the patients and the dentists are terminators in the context diagram. Note that this event-response establishes the VISIT and relates it to the SERVICE.

Figure 4.7.2: The essential event-response data model for event 4.

Note that ...

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