![]() | A use case diagram shows the grouping of services provided by the system to the users. |
![]() | An arrow from an actor to a use case shows which actor starts the use case. |
![]() | The best grouping of functions into use cases depends on a number of factors. Beware of over decomposition. |
![]() | The basic flow is the most important course of events or what happens most of the time. |
![]() | Simple numbered sentences should define mostly interactions across the system boundary in the use case text. |
![]() | The source and target of the interaction should always be included in the sentence that defines it. |
![]() | Simple iteration may be defined in a use case flow using a single sentence. |