【摘要】 讨论增强对象建模方法，引入了功能对象的概念，并以功能对象作为系统级功能建模的主要手段，定义了一种将状态转换图和消息触发机制相结合的消息流图来描述系统的行为模型，较好地解决了ＭＲＰⅡ系统面向对象建模的问题更多还原

【Abstract】 This paper discusses the study on object oriented modeling of MRPⅡ.The enhanced new object oriented method puts the functional object forward as the main way of system functional modeling and designs a kind of message flow diagram, which is composed of STD (state transition diagram) and message triggering mechanism, to describe system behavioral modeling. The enhanced new method is a good solution for object oriented modeling of MRPⅡ.更多还原