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  2. Use case - Wikipedia

    en.wikipedia.org/wiki/Use_case

    In software and systems engineering, a use case is a potential scenario in which a system receives an external request (such as user input) and responds to it. A use case is a list of actions or event steps typically defining the interactions between a role (known in the Unified Modeling Language (UML) as an actor) and a system to achieve a goal.

  3. Use case diagram - Wikipedia

    en.wikipedia.org/wiki/Use_case_diagram

    A use case diagram [1] is a graphical depiction of a user's possible interactions with a system. A use case diagram shows various use cases and different types of users the system has and will often be accompanied by other types of diagrams as well. The use cases are represented by either circles or ellipses. The actors are often shown as stick ...

  4. Use-case analysis - Wikipedia

    en.wikipedia.org/wiki/Use-case_analysis

    Use case analysis is a technique used to identify the requirements of a system (normally associated with software/process design) and the information used to both define processes used and classes (which are a collection of actors and processes) which will be used both in the use case diagram and the overall use case in the development or redesign of a software system or program.

  5. Sequence diagram - Wikipedia

    en.wikipedia.org/wiki/Sequence_diagram

    Sequence diagrams are sometimes called event diagrams or event scenarios. For a particular scenario of a use case, the diagrams show the events that external actors generate, their order, and possible inter-system events. [2] The diagram emphasizes events that cross the system boundary from actors to systems.

  6. Happy path - Wikipedia

    en.wikipedia.org/wiki/Happy_path

    [1] [2] For example, the happy path for a function validating credit card numbers would be where none of the validation rules raise an error, thus letting execution continue successfully to the end, generating a positive response. Process steps for a happy path are also used in the context of a use case. In contrast to the happy path, process ...

  7. User story - Wikipedia

    en.wikipedia.org/wiki/User_story

    Use case flows describe sequences of interactions, and may be worded in terms of a formal model. A use case is intended to provide sufficient detail for it to be understood on its own. Template As a <type of user>, I can <some goal> so that <some reason>. [20] Title: "goal the use case is trying to satisfy" Main Success Scenario: numbered list ...

  8. Who's most at risk of SAD—and how to beat it - AOL

    www.aol.com/whos-most-risk-sad-mdash-170000845.html

    Hawaii Supreme Court rules against insurance companies in wildfire settlement case. Sports. Sports. Associated Press. Gilgeous-Alexander scores 31 and Thunder make franchise-record 27 3s in 137 ...

  9. GRASP (object-oriented design) - Wikipedia

    en.wikipedia.org/wiki/GRASP_(object-oriented_design)

    The controller pattern assigns the responsibility of dealing with system events to a non-UI class that represents the overall system or a use case scenario. A controller object is a non-user interface object responsible for receiving or handling a system event. Problem: Who should be responsible for handling an input system event?