It is not only backup the OOA and OOD, but also the whole procedure from the demand to development.It is possible to lead UML into Software testing.

• 它不仅支持面向对象的分析和设计，而且支持从需求分析开始的软件开发的整个过程，这就为UML引入到面向软件测试中提供了可能。