In order to understand the thought of UML, an example of shopping cart is citinged. Through the combination of the method of OOD and the thought of UML, the model of the system is realized. Namely, it is to design Class Diagram、Use Case Diagram、Sequence Diagram、State Diagram、Component...
UML Class Diagram for Online Shopping (Click on image to modify online)UML Class Diagram for Domain Models (Click on image to modify online)UML Class Diagram for Library Management Systems (Click on image to modify online) Component diagram templates Component diagrams in UML are very similar to...
类是对象的集合,展示了对象的结构以及与系统的交互行为。类主要有属性(Attribute)和方法(Method)构成,属性代表对象的状态,如果属性被保存到数据库,此称之为“持久化”;方法代表对象的操作行为,类具有继承关系,可以继承于父类,也可以与其他的Class进行交互。 类图展示了系统的逻辑结构,类和接口的关系。 二、类的构成...
Initial State –In a State Diagram or an Activity Diagram, this indicates the point at which the diagram begins. Instance– A class is used like a template to create an object. This object is called an instance of the class. Any number of instances of the class may be created. Interface...
1. 类图(Class Diagram): 类图是面向对象系统建模中最常用和最重要的图,是定义其它图的基础。类图主要是用来显示系统中的类、接口以及它们之间的静态结构和关系的一种静态模型。UML用类图表示类、接口及其关联。 2. 表示类元属性的方法: a.属性文本:如currentSale:Sale ...
类图描述系统静态结构。 在系统的逻辑视图中,类图用于表示类和它们之间的关系。我们利用类图来说明实体共同的角色和责任,这些实体提供了系统的行为。 类图中的两个基本元素是类和它们的基本关系。 一、类表示法 类图标由三个部分组成:第一个部分是类名,第二个部分是属性,第三个部分是操作。 类名在它的命名空间中...
PyCharm generates a UML diagram for classes and their dependencies. View local changes as a diagram You can use the UML Class diagram to evaluate how your local code changes affect the application. From the context menu of the code editor, the Project tool window, or the Changes view, ...
Deployment diagrams are a practical way of representing the working of the system. Given below are some diagram examples of common scenarios. Have a look to understand these types of UML diagrams better. Deployment Diagram for Online Shopping ...
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Class Diagram provides an overview of the target system by describing the objects and classes inside the system and the relationships between them. It provides a wide variety of usages; from modeling the domain-specific data structure to detailed design of the target system. With the share model...