Use case diagrams are typically develop in early stage of development and people often apply use case modeling for the following purposes: In 1992 his co-authored book Object-Oriented Software Engineering - A Use Case Driven Approach helped to popularize the technique for capturing functional requirements, especially in software development.In 1986, Ivar Jacobson first formulated textual and visual modeling techniques for specifying use cases.These days use case modeling is often associated with UML, although it has been introduced before UML existed. Online Store Use Case Diagram Origin of Use Case
A use case diagram consists of the system, the related use cases and actors and relates these to each other to visualize: what is being described? ( system), who is using the system? ( actors) and what do the actors want to achieve? ( use cases), thus, use cases help ensure that the correct system is developed by capturing the requirements from the user’s point of view. A use case describes how a user uses a system to accomplish a particular goal.
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