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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.
Robustness analysis reduces the ambiguity in use case descriptions, by ensuring that they are written in the context of an accompanying domain model. This process makes the use cases much easier to design, test and estimate. The ICONIX Process is described in the book Use Case Driven Object Modeling with UML: Theory and Practice.
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.
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 ...
A use case survey is a list of names and perhaps brief descriptions of use cases associated with a system, component, or other logical or physical entity. This artifact is short and inexpensive to produce, and possibly advantageous over similar software development tools , depending on the needs of the project and analyst.
A general attitude towards software isn't a use-case, it's a persona or personality. An example of a use-case would be somebody using an auto-teller machine to see their bank balance. Another example of a different use-case is somebody using that same auto-teller machine to withdraw money. A use-case is a single example of a use of a system.
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The chapter introduces the topic. It discusses the "beginning" and the "meaning" of a novel, the socio-cultural conventions/rules and the methodology of linking the individual events, which may be used in this narrative form, as well as the interactions of these elements. As a special case the autobiographical novel (it's me, who tells) is ...