Section 1 of UML Distilled

Chapter 1 Introduction to UML

Section 1 What is UML?

A Unified Modeling Language (UML) is a set of graphical symbols that help people describe and design software systems (especially software systems built using object-oriented design) to build a single metadatabase. The above definition is too simple. In fact, for different people, the meaning of UML will be different. This is because of the history of UML and people have different opinions on the question of "which elements can constitute an efficient software engineering process. Therefore, my main task in this chapter is to explain how people understand and use UML in order to prepare for other parts of this book.

The graphic modeling language has been in the software industry for a long time. The root cause of its appearance is that the programming language is not abstract enough and it is inconvenient to use it to discuss the design.

However, although the graphic modeling language has a long history, there are still a lot of arguments about their roles in the software industry. These arguments directly affect people's understanding of the role of UML.

UML is a relatively open standard managed by the Object Management Organization (OMG). It is an open Company Association established to create a standard for supporting interoperability, especially for the interconnectivity of object-oriented systems. The most famous thing about OMG is probably the Common Object Request proxy architecture standard.

UML is generated by unifying many object-oriented graphic modeling languages that emerged in the late 1980s s and the early 1990s S. Since the birth of UML in 1997, chaos in the graphic modeling language field has become a historical issue. This is a service that I and many other developers are very grateful.