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System Use Case Modeling - Coggle Diagram
System Use Case Modeling
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System actor
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Can also be external systems, systems that are outside the scope of the project being devloped
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Human actors or external systems interact with the target system by sending and receiving information through an interface
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System UC
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Consistent result: Be it a complete entry or transformation on a piece of information, or simply a query where relevant information is passed to a user
Overview versus detail
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A detail uc typically documentes, as far as possible, all the information needed for the uc.
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Brief, casual, fully dressed
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System UC modeling
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Find system actors
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Output: Actor, UC, UC model
Some special system actors: Actors as sodtware management roles, timer actor, input/output device actor
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System uc realization
UC description
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One basic flow, Many alternative flows
A precondition is the state of the system and its surrounding that is required before the uc can be started
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