文中提出了一种基于数据仓库和位图连接索引的查询方法。

This paper will optimize the processing of join query based on join index.

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直接建立维度表与事实表的位图连接索引会产生大量无用的索引项，影响查询效率。

Building bitmap join indexes of dimension tables and fact tables directly may bring a large number of useless index items that affect query efficiency.

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