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This article will explain in detail what are the main features and application fields of UML. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

1. The main Features of the Standard Modeling language UML

The main features of the standard modeling language UML in the UML tutorial can be summed up in three points:

(1) UML unifies the basic concepts of Booch, OMT and OOSE.

(2) UML also draws on the strengths of other schools in the field of object-oriented technology, including the influence of non-OO methods. The UML symbol representation takes into account the graphical representation of various methods, deletes a large number of symbols that are easily confusing, redundant, and rarely used, and adds some new symbols. Therefore, the ideas of many people in the object-oriented field are imported into UML. These ideas are not invented by UML developers, but are abstracted by developers based on the OO method and rich practical experience in computer science.

(3) UML also put forward some new concepts in the process of evolution. New concepts such as template (Stereotypes), responsibility (Responsibilities), extension mechanism (Extensibilitymechanisms), thread (Threads), process (Processes), Distribution (Distribution), concurrency (Concurrency), pattern (Patterns), cooperation (Collaborations), activity diagram (Activitydiagram) are added to the UML standard, and the concepts of Type, Class and Instance, Refinement, Interfaces and Components are clearly classified.

Therefore, it can be considered that UML is an advanced and practical standard modeling language, but some of these concepts need to be verified in practice, and there must be an evolutionary process in UML.

two。 The Application Field of Standard Modeling language UML

The goal of UML in UML tutorial is to describe any type of system in the way of object-oriented graph, which has a wide range of applications. Among them, the most commonly used is to establish the model of software system, but it can also be used to describe systems in non-software fields, such as mechanical systems, enterprise organizations or business processes, as well as information systems dealing with complex data, industrial systems or industrial processes with real-time requirements. In a word, UML is a general standard modeling language, which can model any system with static structure and dynamic behavior. In addition, UML is suitable for system development from requirement specification description to system completion post-testing.

Different stages of the trial. During the requirements analysis phase, use cases can be used to capture user requirements. Through use case modeling, describe the external roles interested in the system and their functional requirements for the system (use cases). The analysis phase is mainly concerned with the main concepts (such as abstractions, classes and objects, etc.) and mechanisms in the problem domain. We need to identify these classes and their relationship with each other, and use UML class diagram to describe them. To implement the use case, classes need to collaborate, which can be described by the UML dynamic model. In the analysis phase, only the objects of the problem domain (real-world concepts) are modeled, without considering the classes that define the technical details of the software system (such as classes that deal with user interface, database, communication, parallelism, etc.). These technical details will be introduced during the design phase, so the design phase provides more detailed specifications for the construction phase.

Programming (construction) is an independent phase whose task is to convert classes from the design phase into actual code in an object-oriented programming language. When building analysis and design models with UML, you should try to avoid considering transforming the model into a specific programming language. Because in the early stage, the model is only a tool to understand and analyze the system structure, thinking about the coding problem too early is not conducive to the establishment of a simple and correct model.

The UML model can also be used as a basis for the testing phase. The system usually needs to go through unit test, integration test, system test and acceptance test. Different test teams use different UML diagrams as the basis for testing: unit testing uses class diagrams and class specifications; integration testing uses component diagrams and collaboration diagrams; system testing uses use case diagrams to verify the behavior of the system; acceptance tests are conducted by users to verify that the results of the system tests meet the requirements determined in the analysis phase.

In a word, the standard modeling language UML is suitable for describing any type of system with object-oriented technology, and is suitable for different stages of system development, from the description of requirements specifications to the testing and maintenance after the system is completed.

Any modeling language is based on static modeling mechanism, and the standard modeling language UML is no exception. The static modeling mechanism of UML includes use case diagram (Usecasediagram), class diagram (Classdiagram), object diagram (Objectdiagram), package (Package), component diagram (Componentdiagram) and configuration diagram (Deploymentdiagram).

This is the end of this article on "what are the main features and application areas of UML". I hope the above content can be helpful to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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