(State Diagrams)和活动图(Activity Diagrams)是统一建模语言(UML)中的两种不同类型的图表,它们用于描述系统的动态行为,但它们的侧重点和用途有所不同。以下是它们之间的主要区别: 目的和焦点: 状态图:主要用于描述一个对象在其生命周期中的状态变化,以及触发这些状态变化的事件和条件。它关注的是对象的状态和行为。
活动图是UML用于对系统的动态行为建模的常用工具,它描述活动的顺序。活动图在本质上是一种流程图,着重表现从一个活动到另一个活动的控制流,是内部处理驱动的流程。 二、活动图的基本要素? 1、活动(Activity):命令的执行 在UML中,活动的图符如下图表示: 2、起始状态(Start State)与终止状态(End State):表示活动...
UML 之 活动图 活动图(Activitydiagrams)活动图是阐明了业务用例实现的工作流程。业务用例工作流程说明了业务为向所服务的业务主角提供其所需的价值而必须完成的工作。业务用例由一系列活动组成,它们共同为业务主角生成某些工作。工作流程通常包括一个基本工作流程和一个或多个备选工作流程。工作流程的结构使用活动图来进...
Activity is a particular operation of the system. Activity diagrams are not only used for visualizing the dynamic nature of a system, but they are also used to construct the executable system by using forward and reverse engineering techniques. The only missing thing in the activity diagram is t...
UML 2 Activity DiagramsMe, ContactList, Mailing
Activity Diagrams In UML, an activity diagram is used to display the sequence of activities. Activity diagrams show the workflow from a start point to the finish point detailing the many decision paths that exist in the progression of events contained in the activity. They may be used to detai...
The Activity Diagram can help to describe the flow of control of the target system, such as the exploring complex business rules and operations, describing the use case also the business process.Use case diagram | Class diagram | Sequence diagram | Communication diagram | State machine diagram |...
UML Activity Diagram. Design Elements Design elements - UML activity diagrams The vector stencils library "UML activity diagrams" contains 37 symbols for the ConceptDraw PRO diagramming and vector drawing software. "Activity diagrams are constructed from a limited number of shapes, connected with arrows...
Activity diagrams provide a clear visualization of the logic of an algorithm. This provides a clear view of what's happening behind the scenes and makes it easy to identify what's working well and needs improvement. Vividly shows the steps taken when performing a UML use case ...
The control flow is drawn from one operation to another. This flow can be sequential, branched, or concurrent. Activity diagrams deal with all type of flow control by using different elements such as fork, join, etc Purpose of Activity Diagrams ...