Introduction - If you have any usage issues, please Google them yourself
Unified Modeling Language (UML) is also called the unified modeling language is a standard modeling language, began in 1997 with a OMG standard, it is a graphical language support model and software system development, support model and visualization for all stages of software development, including the demand analysis to the specifications, and to construct configuration. The development of the OOA&D (OOAD) method developed from the end of the 80s to the 90s, and UML was the product of this climax. It not only unified the representation method of Booch, Rumbaugh and Jacobson, but also made further development for it, and finally unified it into the standard modeling language accepted by the public.