Use Case

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A description of a system's behaviour as it responds to a request that originates from outside of that system. In other words, a use case describes "who" can do "what" with the system in question. The use case technique is used to capture a system's behavioural requirements by detailing scenario-driven threads through the functional requirements.

Usually presented as a combination of UML Use Case Diagram and textual documentation.

actor

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The following pages link to here: System Behaviour, UML Behaviour Diagrams, UML Use Case Diagram, Unified Modeling Language, User Interface


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