[UML]relationship

[Wittgenstein (Wittgenstein)]

(1) use cases 之間有哪些relationship?
Dependency (<<extend>> & <<include>>), Generalization.

(2) actors之間有哪些relationship?
Generalization.

(3) actor & use case之間有哪些relationship?
Association.

有漏掉嗎?

謝謝

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