SOFTWARE DESIGN
OBJECT ORIENTED DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Only 1 use case
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0 or more use cases
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1 or more use cases
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All are correct
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Detailed explanation-1: -Actors are classified into primary actors (also called active actors) and secondary actors (also called passive actors). Primary actors initiate a use case and hence are somewhat independent. Secondary actors, on the other hand, are used by the system but they do not interact with the system on their own.
Detailed explanation-2: -Actors. A use case diagram shows the interaction between the system and entities external to the system. These external entities are referred to as actors. Actors represent roles which may include human users, external hardware or other systems.
Detailed explanation-3: -Every use case contains three essential elements: The actor. The system user–this can be a single person or a group of people interacting with the process. The goal.