mudzakkir toha

What is difference between include and extend at use case diagram?

-> Include is part of another larger use case. Included use case required, not optional.

UML Use Case Include

UML Use Case Include

-> Extend is optional. Extending use case is optional, supplementary.

use case Extend

use case Extend

-> Generalization

Generalization relationshipis used to illustrate that a  motor failure and a door failure are a “kind of” failure

Generalization relationshipis used to illustrate that a
motor failure and a door failure are a “kind of” failure

use case Generalization

use case Generalization

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