posted 21 years ago
I know when there is some alternatives in the way of one usecase , another usecase can extend it.But I don't know exactly how to write scenario for the second usecase.For example , suppose you want to draw usecase diagram of book deposit in a library , for the usecase of lending book there is an alternative way when the book is borrowed and the action of lending would be rejected.I don't know how to write scenario for the usecase extending the deposit usecase.