To improve query processing, various numbering schemes for XML documents are proposed.

为了提高查询效率, 许多XML文档编码方案相继被提出.

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This paper proposes two new full - text indexing models to improve query - processing efficiency of IR systems.

提出两种新型全文索引模型,用于改善信息检索系统的查询效率.

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And it implements parallel query processing through query localization based on data partitioning and replication.

利用数据划分和复制将查询本地化从而实现并行查询.

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How to improve the performance of joining and aggregation is a key problem for query processing.

提高多表连接和聚集操作性能是OLAP查询中的关键问题之一.

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