Use Case Diagram 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):include为包含关系,当两个或多个用例中共用一组相同的
用例图区分USE和extend 我们知道,在收集一个软件系统需求的时候,一般会用到用例图。在分析两个用例之间的关系的时候,会用到《include》和《extend》这两个原型。这两个原型很容易让UML的初学者感到迷惑,包括我,呵呵。今天,在这里初步探讨它们之间的区别。 《Include》: 表示一个用例包含另一个用例,即要完成包含...
This section describes the Extend Notation used in a UML Use Case Diagram. An Extend Notation presents an extension relation between two use cases where one acts as the base use case and the other acts as an add-on use case.
扩展(Extend) 扩展关系的标识法,带有箭头的虚线,附近带有关键字«扩展»(« extend »),和包含关系一样,扩展关系并不是一种依赖。扩展关系要传达的是,当目标端的用例,位于扩展关系的箭头端被触发时,源端的扩展用例可能选择性的执行,这意味着扩展关系目标端的用例自动完成(当满足触发条件时)。 扩展关系的信...
Theresultof thebehavior that theinclusion use casespecifies, not the behavior itself,is important to the base use case. Include relationships usually do not have names. If you name an include relationship, the name is displayed beside the include connector in the diagram. ...
From UML 1.3, relationships between use cases can be expressed in three different ways: generalization, include, and extend relationships. An extend relationship defines those instances of a use case that may be augmented with some additional behavior defined in an extending use case. While, the ...
spring:datasource:druid:name:xxljob23url:jdbc:postgresql://localhost:9019/postgres?useSSL=falseusername:postgrespassword:pg123456 简介 原XXL-JOB 服务端 xxl-job-admin ,本项目在原基础上扩展支持其他主流数据库 sqlserver oracle pgsql 该版本 同步 xxl-job-admin-2.3.0 ...
Model, and thereby extend our Data Model to include theHoststable,Hostsmust have a field that uniquely identifies each row. In addition, that field must correspond to a field in the Data Model. Those corresponding fields, one in each table, are what enables the tables' data to be ...
接下来需要修改一下 micropython 头文件的路径问题,打开 .vscode/c_cpp_properties.json 文件,在 includePaht 项中增加以下内容:"${workspaceFolder}/../../" 此时大部分 micropython 的头文件都不会飘红了(但仍然有一小部分需要解决)。三、 编译原始 micropython 代码再开始编译代码之前,必须要对 menuconfig 进行...
src/FormData.ts Added NON_ASCII_RE regex constant; modified _getContentDisposition to conditionally include UTF-8 encoded filenames based on ASCII check. Sequence Diagram(s) 🐰 "In the land of code, where changes bloom, A regex was added to lighten the gloom. Non-ASCII filenames now get...