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Unified Modeling Language User Guide, The, Second Edition by Ivar Jacobson, James Rumbaugh, Grady Booch

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Chapter 18. Use Case Diagrams

Use case diagrams are one of the diagrams in the UML for modeling the dynamic aspects of systems. (Activity diagrams, state diagrams, sequence diagrams, and communication diagrams are four other kinds of diagrams in the UML for modeling the dynamic aspects of systems.) Use case diagrams are central to modeling the behavior of a system, a subsystem, or a class. Each one shows a set of use cases and actors and their relationships.

You apply use case diagrams ...

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