free use case diagram tool

interface of vehicles2. Engine assembled into cars, car radios converged into cars3. Taxis are inherited from automobiles4. The taxi and the driver are many to many two-way correlation relations, the driver one-way correlation driving licence (one driver holds a driving licence)5. Drivers rely on onboard WiFi Use case diagram example

, you should useRoleMark. Role tags are similar to instance tags. To create a role model for a class, you can draw a square and place the role name and Class Name of the class inside as the entity mark, but in this case, you cannot underline it. Note: A significant difference between a role diagram and an object diagram is that each object name in an object

Use case diagram The use case diagram describes a functional unit provided by the system. The purpose of the use case

tag: use AR Java strong data for blog HTTP Io OS(转) 用例图 用例图描述了系统提供的一个功能单元。用例图的主要目的是帮助开发团队以一种可视化的方式理解系统的功能需求，包括基于基本流程的"角色" （actors，也就是与系统交互的其他实体）关系，以及系统内用例之间的关系。用例图一般表示出用例的组织关系--要么是整个系统的全部用例，要么是完 成具有功能（例如，所有安全管理相关的用例）的一组用例。要在用例图上显示某个用例，可绘制一个椭圆，然后将用例的名称放在椭圆的中心或椭圆下面的中间位 置。要在用例图上绘制一个角色（表示一个系统用户），可绘制一个人形符号。角色和用例之间的关系使用简单的线段来描述，1所示。 图1：示例用例图 图字（从上到下）：CD销售系统；查看乐队CD的销售统计；乐队经理；查看Billboard 200排行榜报告；唱片经理；查看特定CD的销售统计；检索最新的Billboard 200排行榜报告；排行榜报告服务 用

The key to dealing with object-oriented problems is modeling. Modeling can abstract many important details in the complex world. Many Modeling tools encapsulate UML (that is, uniied Modeling Language ). There are nine types of modeling icons in UML: Use case diagram Class Diagram Object Graph Sequence Chart

Http://www.uml.org.cn/oobject/200901203.asp UML practice-use case diagram, sequence diagram, state diagram, class diagram, package diagram, and collaboration

STARTUML Downloadhttp://staruml.io/1, basic useUse case diagram:650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/89/B1/wKioL1gZ-p2C_PSbAAG-7-7pMmA178.png "title=" 1 use case diagram 1.png "alt=" Wkiol1gz-p2c_psbaag-7-7pmma178.png "/>650) this.width=650; "src=" Http

The key to dealing with object-oriented problems is modeling. Modeling can abstract many important details in the complex world. Many Modeling tools encapsulate UML (that is, the Unified Modeling Language). This course aims to show the highlights of UML. There are nine types of modeling icons in UML: Use case diagram Class

9. use case diagram: 1. Definition: a dynamic view composed of actors, use cases, and their relationships used to describe system functions is called a use case diagram. 2. Composition:

Object-oriented modelObject-oriented model is a model that uses UML (Unified Modeling Language) to describe the system structure, and it realizes the working state of the system from different angles. These graphs facilitate information exchange between users, managers, system analysts, developers, testers, and other personnel. This article mainly introduces use case di