OODM与ERM的转换机制研究及其在MIS中的应用

Research on Conversion Between OODM and ERM and its Application in MIS

针对面向对象开发方法在传统数据库中的应用问题,分析了基于关系数据库系统的OODM的实现方法,研究了应用系统中对象数据结构与E-R模型的映射关系和转换机制,提出了MIS系统的实施方案.采用将对象的属性与操作组织在一起进行设计的模式,增强系统适应性和可维护性.对比传统数据模型,OODM对现实世界的描述方式更接近于人们的思维方式,因而基于OODM的系统有利于维护修改和功能扩充,便于用户理解掌握,促进了面向对象方法在实际软件开发中的应用.

Aiming at the problem about how to apply traditional database technology in objected- oriented development method, the problem of implementing object - oriented data model based on relational database systems was discussed and the mapping relationship between the struetures of objects data in application system and E - R models was studied in this paper. This MIS development method integrated object＇s attribute and operation can enhance the system adaptability and maintainability. The object-oriented data model is more compatibly with real world. And the MIS base on object-oriented data model is propitious to be maitained and understood . The solution can promote the practical application of object - oriented methods.