A system boundary is a rectangle
that you can draw in a use-case diagram to separate the use cases
that are internal to a system from the actors that are external to
the system. A system boundary is an optional visual aid in the diagram;
it does not add semantic value to the model.
Before you begin
Before you can modify a use-case
diagram, you must have a UML modeling project open in the Modeling
perspective.
About this task
To add a system boundary to a use-case diagram:
Procedure
- Open a use-case diagram.
- In the diagram editor, right-click the diagram; then click .
- Resize the rectangle so that it encloses the diagram elements
in the use-case diagram.
- To place the rectangle behind the diagram elements, right-click
the rectangle; then click .