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介绍了在多层Ｗｅｂ结构中ＯＯＤＢ替代ＲＤＢ的必要性。根据ＯＯＤＢ的理论，并结合实例，用ＯＤＬ定义Ｗｅｂ构成的元素类。最后，分析基于ＯＯＤＢ的多层结构Ｗｅｂ实现框架。
The necessity of substituting OODB for RDB in multi-layer Web structure is introduced. According to the theory of OODB, and combined with examples, define the element class of Web with ODL. Finally, we analyze the OODB-based multi-layer Web implementation framework.