SOFTWARE DESIGN
OBJECT ORIENTED DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Use cases
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Boundary objects
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Actors
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Stick men
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Detailed explanation-1: -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-2: -A system boundary is a rectangle that you can draw in a use-case diagram to separate the use cases that are internal to a system from the actors that are external to the system. A system boundary is an optional visual aid in the diagram; it does not add semantic value to the model.
Detailed explanation-3: -System is never an actor in a use case model. You have to think about the thing that is triggering the system under investigation to carry out a process.