unit of externally-visible functionality provided by part of a system.
A UseCase is expressed by sequences of messages exchanged by system units and one or more actors of the system. The definition of a use case includes all of the behavior that it entails. This behavior can be expressed by sequence diagrams, Activity diagrams, Object diagrams, etc. UseCases are structured by Packages, and have cooperation links with Actors. UseCase belong to a NameSpace.
Stéréotype : "UML"
Classes parentes :
Diagrammes de classes : Associations :