Uml ( unified modeling language ) is a standard of omg ( object management group ) . and uml is a graphical language for visualizing , specifying , constructing , and documenting the artifacts of a software system , as well as for business modeling and other non - software systems 统一建模语言( uml )是对象管理集团( omg )的标准,是一种用于对软件密集型系统以及商业建模和非软件系统进行可视化、详述、构造和文档化的建模语言,主要适用于分析与设计阶段的系统建模。