WebMar 17, 2009 · Just out of the head it seems to be clear: "extend" is some kind of specialization, a use case that extends the functionalities of its base case etc...while "include" is a use-case which will be called as a consequence of invoking another one. WebMar 20, 2024 · Structuring use cases with base, include, and extend use cases is an effective way to create clear and concise use cases that are easy to understand and …
Use Case Diagrams Reference
Include = reuse of functionality. Extends = new and/or optional functionality. You will most often find the 2nd usage (i.e. optional functionality) of extends, because if functionality is not optional, then most times it is built into the use case itself, rather than being an extension. See more The key to Include and extend use case relationships is to realize that, common with the rest of UML, the dotted arrow between use cases is a dependency relationship. I’ll use … See more A base use case is dependent on the included use case(s); without it/them the base use case is incomplete as the included use case(s) represent sub-sequences of the interaction that may happen always OR … See more I hope I’ve shown that the common misconception of “includes are always, extends are sometimes” is either wrong or at best simplistic. This version actually makes more sense if you consider all the issues about the … See more The extending use case is dependent on the base use case; it literally extends the behavior described by the base use case. The base use case … See more crypto wallet trust
Extend and include in the UML use case diagram - YouTube
WebNov 10, 2024 · Extend is intended to be used when there is some additional behavior that should be added, possibly conditionally, to the behavior defined in one or more UseCases. and The Include relationship is intended to be used when there are common parts of the behavior of two or more UseCases. WebThe base case can specify multiple extension point names - the extension can then insert segments into these extension point to modify the behavior of the base case. Then there is also the "include" which typically is a fragment can be shared between multiple use cases. Agile Modeling: Use Case Reuse Webthe extension use case is not meaningful on its own. The extension use case consists of one or several behavior sequences (segments) that describe additional behavior that can incrementally augment the behavior of the base use case. Each segment can be inserted into the base use case at a different point, called an extension point. crypto wallet transfer