The Mapping process each element in DTD and mapping to an object schema. Then the object schema is mapped to the relation database schema.

映射的策略是以分析处理DTD中的每一个元素映射为对象模型，再由对象模型映射为数据库的关系模型。

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Deal with the problem of object and relation mapping is to solving the problem of data persistence.

对象和关系的映射实际上是要解决数据持久性问题。

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This article introduces the work stream in designing of object relation database, and mainly discusses the ways of mapping from the class model to the relational model.

介绍对象关系数据库设计的工作流程，讨论如何将类模型映射到关系模型。

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