结合在集成本地XML存储数据一节介绍的场景，来看看图4所示的实体关系图，该图描述了一个在线书店的场景。

Based on the scenario introduced in the Integrating local XML store data section, consider the entity relationship diagram shown in Figure 4 that describes an online bookstore scenario.

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可以使用它把XML数据与关系数据结合在一起。

This could be used for integration with relational data.

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IWA是一个令人振奋的突破，它将新的数据仓库技术和传统的Informix关系数据库服务器相结合，产生一种非常快的性能。

IWA is an exciting breakthrough-combining new data warehouse technology with traditional Informix relational database servers-that results in very fast performance.

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