Nov 8, 2009 · 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 …

An include dependency is a generalization relationship denoting the inclusion of the behavior described by another use case. The best way to think of an include dependency is that it is the …

Dec 8, 2021 · In the latter case, the use case offered to the user doesn't present internal implementation. It doesn't matter how many internal modules it has to use, it is always just a …

Dec 1, 2020 · But is the login really a user goal? Isn't it rather some detailed steps required to fulfil other goals? While UML is agnostic about the interaction that a use-case may represent …

Jun 25, 2013 · <<extend>> defines an optional sub use-case that can be executed upon certain conditions (which should be defined at a lower level design, not in use-case diagram). Here …

Apr 28, 2014 · Here is the "order" scenario: The client clicks on the order button. The system checks if the user is authenticated. If the user is authenticated the system displays the …

Feb 7, 2024 · The use-case is the goal for which actors use the system. By definition, the use case is a set of behaviors. And nothing prevents you to design a user interface that …

Apr 18, 2017 · For what I know an extend relationship is when a use case is optional, but the include is when the operation of the use case it is needed (but not all the times). I want to …

Aug 28, 2013 · For example, the flow of events that occurs at the beginning of every ATM use case (when the user puts in their ATM card, enters their PIN, and is shown the main menu) …

May 4, 2025 · Something about include. Use case that is included in some other use case (base use case) must be executed when base use case is executed. Main reason behind include's …