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But sometime there are duplicate storage problems because of the impedance mismatch between object model and relational model.

在面向对象的Java应用开发中,经常采用关系数据库作为持久对象的存储机制,由于对象模型与关系模型之间的“阻抗不匹配”问题,以及关系数据库管理系统本身的内部标识生成机制,使得在关系数据库中存储Java对象时,有时会导致重复对象数据的存储。

This paper analyzes the process about the integration of the C-Omega language and the query language, points out the merit of using inquiry operator in the integration, and proposes a solution about impedance mismatch on operating the data set based on the C-Omega and query language on basis of this.

分析C-Omega语言和查询语言的集成过程,指出集成中使用查询运算符的优点,提出C-Omega语言和查询语言在操纵数据集时阻抗不匹配的解决方案。