![]() Show’s external and internal influences on a system.Provide a model for the flow of events when it comes to user interactions.Specify the context a system should be viewed in.Represent the goals of systems and users.The reasons why an organization would want to use case diagrams include: There are a number of benefits with having a use case diagram over similar diagrams such as flowcharts. Use case diagrams are employed in UML (Unified Modeling Language), a standard notation for the modeling of real-world objects and systems. In this context, the term "system" refers to something being developed or operated, such as a mail-order product sales and service Web site. Use case diagrams will specify the events in a system and how those events flow, however, use case diagram does not describe how those events are implemented.Ī use case is a methodology used in system analysis to identify, clarify, and organize system requirements. It is generally shown as a graphic depiction of interactions among different elements in a system. ![]() A use case diagram is a way to summarize details of a system and the users within that system.
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