In order to deal with this problem, the Object Relational Mapping approach is proposed to unify the objective model and relational model, providing a way of data interchange between objects and relational database.

• 为解决这一问题而提出的对象关系映射(Object Relational Mapping，简称ORM)，实现了面向对象模型与关系模型之间的相互映射，提供了对象与关系数据库沟通的桥梁。