include是指用例中的包含关系,通常发生在多个用例中,有可以提取出来的公共部分(就象提取公因式一样),例如 UseCaseA 中包括了 a 和 b 两个流程,而 UseCaseC 中包含了 c 和 b 两个流程。为了提高复用性,可以把 b 提取出来,形成另一个用例 UseCaseB,此时,UseCaseA include UseCaseB(表现为一条指向 Us
Use Case中的include, extend和generalization 画用例图时用例之间的关系应该是一个比较难理解的概念,用例之间的关系分为include, extend和generalization三种。 先介绍一下比较容易理解的generalization,generalization关系是一种继承关系,子用例将继承基用例的所有行为,关系和通信关系,也就是说在任何使用基用例的地方都可以...
现在要画得复杂了就有点不知所措了。主要是Usecase中,对用例之间的关系搞不太清楚。标题也说得比较清楚了,用例之间“Include”和“Extend”的区别是什么? 望高手解答,谢谢!UML 问题补充: 例如,两个用例“课程管理”和“选课”、“退课”之间是什么关系? 飞鸟_Asuka | 菜鸟二级 | 园豆:393 提问于:2013-...
扩展(extend)：extend关系是对基用例的扩展，基用例是一个完整的用例，即使没有子用例的参与，也可以完成一个完整的功能。extend的基用例中将存在一个扩展点，只有当扩展点被激活时，子用例才会被执行。extend关系在用例图中使用带箭头的虚线表示(在线上标注<<extend>>)，箭头从子用例指向基用例。包含(include)：...
学习用例图- Include and Extend Use Case 什么是用例图? 用例描述了一个演员和感兴趣的系统之间的一系列交互,以达到某种特定目标,并由某种触发事件引发。用例满足需求或为演员解决问题。用例图包含一组用例,可以通过从每个角色的不同角度讲述系统将如何使用的“故事”来开发。
communication lines between actors and use cases, (include, extend, and inheritance) arrows between use cases. These are detailed in the rest of this document. (Note there is no mention here about Test cases, or packages.) A use case diagram can represent different things depending on the le...
We're trying to get a Use Case "include" and "extend" relationship into another toolbox. However, we can't seem to define it so that it works...We note that when we create one out of the (UML) Use Case toolbox; we see (in t_connector) Type=UseCase, Subtype=Extends (or ...
用例(use case)用来描述系统对事件做出响应时所采取的行动.用例之间是具有相关性的。在一个会员管理系统中,会员注册时可以采用电话和邮件两种方式.用例“会员注册”和“电话注册”“邮件注册”之间是()关系.A 包含(include) B 扩展(extend) C 泛化(generalize) D 依赖(depe
The Document Management System (DMS) use case diagram example below shows the actors and use cases of the system. In particular, there are include and extend relationships among use cases.The Order System use case diagram example below shows the actors and use cases involved in the system:...
These shared services include security services, logging, monitoring, Dev Ops tools, and authentication to name a few. These common services can be abstracted into their own Amazon VPC and shared among the workloads that exist in their own separate Amazon VPCs. The Amazon VPC that contains and ...