The model obtained by the traditional structured method results in tight coupling between the control flow and the data flow,while the empirical object oriented method also exists flaws in abstract method.

• 用传统的结构化建模方法得到的模型使得控制流和数据流之间存在紧密耦合 ; 面向对象建模方法在抽象方式上又存在缺陷 .