25.5. Use Case Diagrams
Figure 25.1 illustrates the UML notation for the include relationship, which is the only one being used in the case study, following the advice of use-case experts to keep things simple and prefer the include relationship.
Figure 25.1. Use case include relationship in the Use-Case Model.
The extend relationship notation is illustrated in Figure 25.2.
Figure 25.2. The extend relationship.
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