RAD Studio (Common)
UML 2.0 Use Case Diagram Definition

Diagram courtesy of the Unified Modeling Language: Superstructure version 2.0. August 2003. p. 536.

Use case diagrams describe required usages of a system, or what a system is supposed to do. The key concepts that take part in a use case diagram are actors, use cases, and subjects. A subject represents a system under consideration with which the actors and other subjects interact. The required behavior of the subject is described by the use cases.

The following diagram shows an example of actors and use cases for an ATM system.  

UML 2.0 Use Case Diagram 


Copyright(C) 2009 Embarcadero Technologies, Inc. All Rights Reserved.
What do you think about this topic? Send feedback!