There are two kinds of models in MDA: PIM and PSM.We can transfer PIM to PSM automatically using some special transformation rules,so that we can generate application codes and test frameworks easily.

• 在MDA开发模式中,将模型分为PIM(平台独立模型)和PSM(平台相关模型),其目的在于通过一定的变换规则实现PIM到PSM的自动转换,从而可以方便地生成应用程序代码以及测试框架。