![]() ![]() ![]() => this is a way of saying that is the place in the main flow where the other use case (extending use case) is referenced. One of the system steps can be an extension point.The use case steps show the actor/system (business or IT) interactions.One of the key constructs of the use case specification is the "Main Flow" which is a step by step description of the behaviour of the use case.For each use case in the use case diagram, there will be a use case specification which contains the details of the given use case.NOTE: The extend relationship can be shown in the use case diagram but an alternate flow cannot be seen in the use case diagram.One type of use case to use case relationship is the > relationship - this signifies that one use cases is extended by referencing another use case. ![]()
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