CODEWITHSUNDEEP
umluse-case
user29312
user29312

Reputation: 89

Flow of a use-case

If use-case A extends use-case B, does that mean A is complete and flow shifted to B or flow will return to A?

Does UML put any restrictions on that? Or does it depend on the modeler?

Upvotes: 0

Views: 474

Answers (1)

Steven A. Lowe
Steven A. Lowe

Reputation: 61223

"extends" in use-case terminology is not a sequential control-flow relationship; "A extends B" means that under certain circumstances use-case A occurs in addition to use-case B. Use-case B can stand alone, use-case A cannot (as it depends on B). Use-case A occurs at an 'extension point' in use-case B.

please review the definitions it sounds like there is some confusion

Upvotes: 4

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