15 Use Case Diagram Ooad. Payment can be through paypal or credit card. A use case diagram at its simplest is a representation of a user's interaction with the system that shows the relationship between the user and the different use cases in which the user is involved.
Use case diagrams are usually referred to as behavior diagrams used to describe a set of actions ( use cases ) that some system or systems ( subject ) should or can perform in collaboration with one or more external users of the system ( actors ). • specify the context of a system • capture the requirements of a system • validate a systems architecture • drive implementation and generate test. In addition to introducing use cases as primary elements in software development, jacobson (1994) also introduced a diagram for visualizing use cases.
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15 Use Case Diagram Ooad. Name each use case with verb/subject (and. The use case diagram is also now part of the uml. Case study of use case diagram. Use case diagrams are usually referred to as behavior diagrams used to describe a set of actions ( use cases ) that some system or systems ( subject ) should or can perform in collaboration with one or more external users of the system ( actors ).