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This article mainly introduces what UML means, the text is very detailed, has a certain reference value, interested friends must read!

Introduction to UML

Unified Modeling Language (UML) is a general purpose visual modeling language used to describe, visualize, construct and document software system artifacts. It records the decisions and understanding of the system that must be constructed and can be used for system understanding, design, browsing, configuration, maintenance, and information control. UML is applicable to all kinds of software development methods, all phases of software life cycle, all kinds of application fields and all kinds of development tools. It is a standard modeling method that summarizes the experience of previous modeling techniques and absorbs the excellent achievements of today.

UML includes semantics, representations, and descriptions of concepts, providing models of static, dynamic, system environments, and organizational structures. It is supported by interactive visual modeling tools that provide code generators and report generators. The UML standard does not define a standard development process, but it applies to iterative development processes. It is designed to support most existing object-oriented development processes.

UML describes the static structure and dynamic behavior of a system. UML describes a system as a model structure of discrete interacting objects that ultimately provide functionality to external users. Static structures define the properties and operations of important objects in the system and the relationships between those objects. Dynamic behavior defines the temporal properties of objects and the mechanisms by which objects communicate with each other to accomplish their goals. Models of systems from different but interrelated perspectives can be used for different purposes.

UML also includes structural components that decompose models into packages, allowing software teams to decompose large systems into manageable block structures, understand and control dependencies between packages, and manage model units in complex development environments. It also includes components for displaying system implementation and organizing operations.

UML is not a programming language, but code generator tools can be used to convert UML models to code in multiple programming languages, or reverse generation tools can be used to convert program source code to UML. UML is not a highly formal language for theorem proving. There are many such languages, but they are not universal enough to understand and use easily. UML is a general modeling language. For specialized domains, such as GUI design, VLSI design, and rule-based artificial intelligence, it may be more appropriate to use specialized languages and tools. UML is a discrete modeling language and is not suitable for modeling continuous systems in fields such as engineering and physics. It is a comprehensive general purpose modeling language suitable for modeling discrete systems such as computer software, firmware, or digital logic.

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