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This article mainly explains the use and creation method of UML class diagram. The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn the use and creation method of UML class diagram.

The purpose of UML class diagram:

◆ provides an implementation-independent description of the types used in the system and the types passed between the system components.

For example, the "order" type can be implemented in .NET code at the business layer, in XML in the interface between components, in SQL in the database, and in HTML in the user interface. Although these implementations differ in detail, the relationship between the "order" type and other types, such as "menu" and "payment", is always the same. These relationships can be discussed separately from the implementation through the UML class diagram.

◆ clarifies the vocabulary of the vocabulary used to communicate between the application and its users and describes the user's needs. For more information, see user requirements Modeling.

For example, consider a user scenario, use case, or other requirement description for a restaurant application. In this description, you will find words such as "menu", "order", "catering", "price", "payment" and so on. You can draw UML class diagrams that define the relationships between these terms. This reduces the risk of inconsistencies in requirements descriptions, user interfaces, and help documentation.

Create a UML class diagram

1. On the Architecture menu, click New Diagram.

two。 Under templates, click UML Class Diagram.

3. Name the diagram.

4. In add to Modeling Project, select an existing modeling project from your solution, or select create a new modeling project, and then click OK.

A new class diagram is displayed, along with the UML Class Diagram toolbox. The toolbox contains the required elements and relationships.

Draw UML class diagram

1. To create a type, click the Class, Interface, or enumeration tool on the toolbox, and then click the blank part of the diagram.

two。 To add a property or action to a type, or text to an enumeration, click the property, Action, or text title in the type, and then press Enter.

You can write signatures, such as:

F (x:Boolean): Integer

. For more information, see Properties and Operations.

3. To quickly add multiple items, press Enter twice in the * of each item. You can use the arrow keys to move up and down the list.

4.。 To expand or collapse a type, click the V-shaped icon in the upper-left corner of the type. You can also expand and collapse the Properties and Operations sections of a class or interface.

5. To draw an association, inheritance, or dependency link between types, click the relationship tool, click the source type, and then click the target type.

6. To create a type in a package, use the package tool to create a package, and then create a new type and package in the package. You can also use the copy command to copy types and then paste them into a package.

Each diagram is a view in the model that can be shared among other diagrams in the same project. To see a tree view of the complete model, click View, point to other Windows, and then click UML Model Explorer.

Thank you for your reading, the above is the content of "the use and creation method of UML class diagram". After the study of this article, I believe you have a deeper understanding of the use and creation method of UML class diagram, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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