时序图表示参与者与对象之间、对象与对象之间的动态交互过程及时序关系。 时序图详细而直观地展示了对象随时间变化的状态、调用关系和消息时序,时序图中的主要元素有:参与者(Actor), 对象(Object),生命线(Lifetime)、控制焦点(Focus of Control)、消息(Message)、组合片段(Combined Fragments)等。 时序图
The diagram below provides a simple view of how the primary processes operate with each other over time. Sequence diagram for ATM systems An ATM allows patrons to access their bank accounts through a completely automated process. You can examine the steps of this process in a manageable way ...
Defining what a UML sequence diagram is A UML sequence diagram is a graphical representation that depicts the interaction of objects in a system over time. These diagrams capture the sequence of messages exchanged between objects and the order in which these interactions occur, presenting them as ...
一、时序图简介(Brief introduction) 时序图(Sequence Diagram)是显示对象之间交互的图,这些对象是按时间顺序排列的。顺序图中显示的是参与交互的对象及其对象之间消息交互的顺序。时序图中包括的建模元素主要有:对象(Actor)、生命线(Lifeline)、控制焦点(Focus of control)、消息(Message)等等。 二、时序图元素(Sequen...
A UML sequence diagram shows how a set of objects interact in a process over time. It shows the messages that pass between participants and objects in the system, and the order in which they occur.WindowsWebTo build a sequence diagram, use a UML Sequence template or starter diagram,...
顺序图 (sequence diagram)是一种详细表示对象之间动态交互的图形文档。 顺序图将交互关系表示为一个二维图。 横轴代表了在协作中各独立的对象。 纵轴是时间轴,时间沿竖线向下延伸。 沿时间方向按时间递增顺序列出个对象所发出和接收的消息。 例如:汽车租赁系统中客户取车的顺序图 ...
I’ll then work through the logic with at least one more person, laying out classifiers across the top as I need them. I automatically add the object lifelines but as I indicated earlier will typically not invest time adding activation boxes. The heart of the diagram is in the messages, ...
A UML sequence diagram shows how a set of objects interact in a process over time. It shows the messages that pass between participants and objects in the system, and the order in which they occur.WindowsWebTo build a sequence diagram, use a UML Sequence template or starter diagram, which...
You can also describe in a UML class diagram the types of parameters and returned values that were used in the messages sent between the lifelines. Use case details A use case represents a user's goal, together with a sequence of steps for achieving the goal. The sequence of steps can be...
一、活动图的组成元素 Activity Diagram Element 1、活动状态图(Activity) 活动状态用于表达状态机中的非原子的运行,其特点如下: (1)、活动状态可以分解成其他子活动或者动作状态。 (2)、活动状态的内部活动可以用另一个活动图来表示。 (3)、和动作状态不同,活动状态可以有入口动作和出口动作,也可以有内部转移。