A use case diagram is a dynamic or behavior diagram inUML. Use case diagrams model the functionality of a system using actors and use cases. Use cases are a set of actions, services, and functions that the system needs to perform. In this context, a "system" is something being developed...
Models the goals of system/actor (user) interactions Describes one main flow of events (main scenarios) and possibly other exceptional flows (alternatives), also called paths or user scenariosTry it! Finding an online Use Case Diagram tool? Just click the Draw button below to create your Use ...
Use Case Diagram Online AuctionSystemUseCaseand MisuseCaseDiagramsMounika Challagundla‚ Graduate Student Dr. Natarajan Meghanathan‚ Associate Professor Department of Computer Science Jackson State University‚ Jackson‚ MS 39217‚ USAusecasedescription • Registration: Anyone who want to participa...
UML Use Case Diagram Example Registration System This sample was created in ConceptDraw PRO diagramming and vector drawing software using the UML Use Case Diagram library of the Rapid UML Solution from the Software Development area of ConceptDraw Solution Park. This sample shows the types of user’...
UML——Use Case Diagram(用例图) 用例图主要用来描述角色以及角色与用例之间的连接关系。说明的是谁要使用系统,以及他们使用该系统可以做些什么。一个用例图包含了多个模型元素,如系统、参与者和用例,并且显示这些元素之间的各种关系,如泛化、关联和依赖。它展示了一个外部用户能够观察到的系统功能模型图。
用例框图(UseCase Diagram)简介 用例框圖(UseCase Diagram)簡介 用例框圖顯示系統中的用例與角色及其相互關係。用例是系統提供的高級功能塊，角色是與所建系統交互的物件。下圖是個用例框圖的例子：用例(UseCase)用例是系統提供的功能塊。換句話說，用例演示了人們如何使用系統。下圖表示一個"登錄"的用例：
1 在下面的用例图(UseCase Diagram)中,X1、X2和X3表示 (38) ,已知UC3是抽象用例,那么X1可通过 (39) 用例与系统进行交互。并且,用例 (40) 是UC4的可选部分,用例 (41) 是UC4的必须部分。(38)是() A.人 B.系统 C.参与者 D.外部软件 2 在下面的用例图(UseCase Diagram)中,X1、X2和X3表示 (...
Software UML diagrams present different perspectives of the system, mainly the design, implementation, process, and deployment. It is referred to by software personnel, business users, and all interested in understanding the said system. A Use Case diagram is aUML diagramthat represents the dynamic...
用例模型是从应用领域(Application domain)的角度,面向用户的一种模型,旨在描述用户眼中(而非程序员眼中)此系统的功能行为。以下是一张用例图,先有一个大致的印象: 一个售票系统的用例图 用例图体现了该系统能够为参与者提供的种种功能以及这些功能之间的联系。要画好一张用例图,需要把握三个元素:参与者(Actor)、...
Use Case Diagram 1、确定参与者(actor) 1.1用户 使用ATM自动取款机进行现金交易。进行余额查询、设置密码、修改密码、转账等操作。 1.2银行管理员 对用户的需求进行接收,通过与数据库的交互,根据对用户应用服务的响应,更新数据库中用户的信息。 2、参与者(actor)用例图...