Use Case Diagram






The Use Case diagram displays the user's view of a system. It represents what the systems does, as opposed to how it does it. The following concepts can be used to build your Use Case diagrams in Open ModelSphere:

To add an actor

To add a use case



To add an Object (non human actor) 

To add a Relationship

Assign a UML sterotype to an object



Assign a UML constraint to an object

Here are some of the more advanced features available in Open ModelSphere to work with Use Case diagrams :
The
common concepts such as Semantic Links and Graphical Notes can also be used to enrich your Use Case diagrams.



Specifying Use Cases
 
By using the decomposition tool on a Use Case, ModelSphere lets you specify using any of the following diagrams: Use Case, Sequence, Collaboration, Statechart or Activity. When you select the decomposition tool and click on the Use Case you want to specify, ModelSphere presents you a diagram selection dialog (shown below). Select the diagram type and ModelSphere will create the sub level for you, with an empty diagram of the chosen kind.