摘要
由于对象模型和关系模型存在阻抗不匹配,实现对象和关系的映射已成为软件开发领域的关键问题。本文提出了ORM系统的三层模型,在业务逻辑层和关系数据库的物理存储结构中间增加一个O-R映射,并给出了各个层次的详细设计和分析,最后验证了该模型在实际应用中的有效性。
Due to the impedance matching of the object and the relations, the Object-Relational Mapping（ORM） is be- coming a focus of the field of software development. This paper puts forward a three-layered system architecture for object- oriented relational databases. And an O-R agent layer is added between the operation-layer and the relational database. Each layer and its analysis are discussed in detail. Finally,the validity of the model is demonstrated in practice.
出处
《计算机工程与科学》
CSCD
2007年第12期120-122,共3页
Computer Engineering & Science
