Working with Use Case Diagram

To create a Use Case Diagram:

1. Select first an element where a new Use Case Diagram to be contained as a child.
2. Select Model | Add Diagram | Use Case Diagram in Menu Bar or select Add Diagram | Use Case Diagram in Context Menu.

In Use Case Diagram, you can use following elements.

• Package
• Use Case Subject
• Actor
• Use Case
• Extension Point
• Association
• Dependency
• Generalization
• Include
• Extend

See also

UML Use Case Diagram

For more information about UML Use Case Diagram.

Use Case Subject

To create an Use Case Subject:

1. Select Use Case Subject in Toolbox.
2. Drag on the diagram as the size of Use Case Subject.

Actor

To create an Actor:

1. Select Actor in Toolbox.
2. Drag on the diagram as the size of Actor.

To create an Actor (model element only) by Menu:

1. Select an Element where a new Actor to be contained.
2. Select Model | Add | Actor in Menu Bar or Add | Actor in Context Menu.

To edit an Actor, you can do following actions:

• Use Quick Edit for Classifier by double-click or press Enter on a selected Actor.
• Add Attribute - See Attribute
• Add Operation - See Operation

To suppress Attributes, see Suppress Attributes.

To suppress Operations, see Suppress Operations.

To hide Operation signatures, see Show Operation Signature.

Use Case

To create an Use Case:

1. Select Use Case in Toolbox.
2. Drag on the diagram as the size of Use Case.

To create an Use Case (model element only) by Menu:

1. Select an Element where a new Use Case to be contained.
2. Select Model | Add | Use Case in Menu Bar or Add | Use Case in Context Menu.

To edit an Use Case, you can do following actions:

• Use quick-edit-usecase by double-click or press Enter on a selected Use Case.
• Add Extension Point - See Extension Point.

To suppress Attributes, see Suppress Attributes.

To suppress Operations, see Suppress Operations.

To hide Operation signatures, see Show Operation Signature.

Extension Point

To add an Extension Point:

1. Select an Use Case.
2. Select Model | Add | Extension Point in Menu Bar or Add | Extension Point in Context Menu.

To edit an Extension Point, you can do following actions:

• Use Quick Edit for Extension Point by double-click or press Enter on a selected Extension Point.

Include

To create an Include:

1. Select Include in Toolbox.
2. Drag from a Use Case and drop on another Use Case (to be included).

Extend

To create an Extend:

1. Select Extend in Toolbox.
2. Drag from a Use Case (to be extended) and drop on another Use Case.