First understanding of UML

Uml-Unified Modeling Language, called the Unified Modeling Language, is a visual Modeling Language used to design software blueprints. It supports the analysis, design, implementation and delivery of object-oriented systems, and supports system understanding, design, browsing, maintenance, and information control. It can be understood that a system can be represented in UMl from scratch in different aspects of its implementation.

In the last phase, I learned the UMl video from instructor LIU Hui. The understanding of the video can be expressed in a figure.

It is to first understand the object-oriented technology in UMl, understand the structure of a system, such as basic construction blocks, rules, and public mechanisms, and then start modeling. In the process of system development, you should also understand some development practices, such as iterative development.

The core of UML is nine types of diagrams, which are classified into use case diagram, static diagram, dynamic diagram, and implementation diagram.

Four types of graphs can be divided:

The nine diagrams seem independent, but they interact with each other and complement each other. Learning UML lays the foundation for further understanding of software system development.