UML（Unified Modeling Language的缩写）统一建模语言,是用来对软件密集系统进行可视化建模的一种语言。UML为面向对象开发系统的产品进行说明、可视化、和编制文档的一种标准语言。-UML (Unified Modeling Language abbreviation) Unified Modeling Language, is used for software-intensive systems as a visual modeling language. UML object-oriented development system for the product descr iption, visualization, and documentation of a standard language.