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  2. Use case - Wikipedia

    en.wikipedia.org/wiki/Use_case

    Essential use cases, also called abstract use cases, describe the potential intents of the actors and how the system addresses these, without defining any sequence or describing a scenario. [8] This practice was developed with the aim of supporting the user-centric design and avoiding to induce bias about the user interface in the early stage ...

  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

    A use case analysis is the primary form for gathering usage requirements for a new software program or task to be completed. The primary goals of a use case analysis are: designing a system from the user's perspective, communicating system behavior in the user's terms, and specifying all externally visible behaviors.

  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

    In use case analysis, there is only one happy path, but there may be any number of additional alternate path scenarios which are all valid optional outcomes. If valid alternatives exist, the happy path is then identified as the default or most likely positive alternative.

  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. Executive Orders Signed By Donald Trump - The Huffington Post

    data.huffingtonpost.com/2017/trump-executive-orders

    Because executive orders provide presidents with the ability to advance policy unilaterally, leaders who use them risk appearing too dictatorial or, at least, end up being forced to accept blame if a policy becomes unpopular. Here's where President Donald Trump stands on the issuing of executive orders in relation to his predecessors.

  9. 4+1 architectural view model - Wikipedia

    en.wikipedia.org/wiki/4+1_architectural_view_model

    Scenarios: The description of an architecture is illustrated using a small set of use cases, or scenarios, which become a fifth view. The scenarios describe sequences of interactions between objects and between processes. They are used to identify architectural elements and to illustrate and validate the architecture design.