UML Modeling Techniques > Use case modeling > Use case diagrams > Adding items to a use case diagram
Adding items to a use case diagram
You can add existing items to a Use Case diagram through drag-and-drop operations, tab buttons and populate commands.
For information about adding Variability items to a Use Case Diagram, see the following topics:
To add an actor to a use case diagram:
• Drag the Actor from a Modeler pane to the Use Case Diagram.
or
1. On the Use Case Diagram tab, click the Actor button, and then right-click on the diagram in free space.
2. From the Select Object dialog, select the Actor you want to add to the diagram, and then click OK.
To add a use case to a use case diagram:
• Drag the Use Case from a Modeler pane to the Use Case Diagram.
or
1. On the Use Case Diagram tab, click the Use Case button, and then right-click on the diagram in free space.
2. From the Select Object dialog, select the Use Case you want to add to the diagram, and then click OK.
To add generalizations to a use case diagram:
1. On the diagram locate the Actor or Use Case that is connected to the Generalization you want to add.
2. Right-click the Actor or Use Case, and select any of the following as appropriate:
◦ Populate > Parent Actors
◦ Populate > Child Actors
◦ Populate > Parent Use Cases
◦ Populate > Child Use Cases
To add interactions to a use case diagram:
1. Locate the Actor that is connected to the Interaction you want to add.
2. Right-click the Actor, and select Populate > Related Use Cases.
or
1. Locate the Use Case that is connected to the Interaction you want to add.
2. Right-click the Use Case, and select Populate > Related Actors.
To add extend flows to a use case diagram:
• Locate the Use Case that is connected to the Extend Flow you want to add.
• Right-click the Use Case, and select Populate > Related Use Cases.
To add a use case to a use case diagram:
1. Locate the Use Case that is connected to the Include Flow you want to add.
2. Right-click the Use Case, and select Populate > Related Use Cases.