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Published byAlvin McLaughlin Modified over 8 years ago
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TA: Shreya Rawal
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A use case is a description of a system’s behavior as it responds to a request that originates from outside of that system (Usually user). In other words, a use case describes "who" can do "what" with the system in question.
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A use case diagram in the Unified Modeling Language (UML) is a type of behavioral diagram defined by and created from a Use- case analysis. Its purpose is to present a graphical overview of the functionality provided by a system in terms of actors, their goals (represented as use cases).
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Actor Use-Case
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An actor specifies a role that some external entity adopts when interacting with the system directly. It may represent a role played by: * a user * another system * a piece of hardware Actors may be both at input and output ends of a use case
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Describes all the services required or performed by the actor.
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Use Case Names Written in a oval Simple Name Register Students
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