Specifying the relationships in use case diagrams

You can specify relationships to identify the semantic ties that exist between the elements in a model.

Relationships are a type of model element; therefore, many of the tasks that you can perform on other model elements you can also perform on relationships. When you add relationships to a model, you must work in the diagram editor and add relationships as connectors between the model elements in your diagram. You cannot specify relationships in the Model Explorer view.

Parent topic: Modeling the behavior of a system by using use case diagrams

Related concepts
Use case diagrams
Relationships between model elements

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