Use Case - Difference between Include and Extend Notation

I see people always struggling with include/exclude notation inside use case diagrams. I think these diagrams could explain it better. use case diagram include…

Use case diagrams are UML diagrams describing units of useful functionality (use cases) performed by a system in collaboration with external users (actors).

Use Case - Difference between Include and Extend Notation

uml - Use case generalization versus extension - Stack Overflow

The Use Case Model - UML Tutorial

UML Relationships Types: Association, Dependency, Generalization

UML use case include relationship shows that behavior of the included use case is inserted into the behavior of the including use case.

Use Cases Alistair Cockburn, Writing Effective Use Cases, Addison-Wesley, Grady Booch, James Rumbaugh, and Ivar Jacobson, Unified Modeling Language. - ppt video online download

Putting The Inclusion Use Case In Focus - Business Analyst Articles, Webinars, Templates, Jobs

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Use Case Diagram - Extend Notation

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Use Case - Difference between Include and Extend Notation

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