Relationships Between Use Cases (4/4)

• Generalization Relationship

  • similar to the generalization relationship between classes
  • B inherits the behavior of A and is allowed to override and extend it
  • B inherits the communication relationships of A
  • modeling of abstract use cases is also possible ({abstract})

base use case;

is self-contained

sub use case;

needs A (gets base functionality from A);

controls, what is executed from A

and what gets changed

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