The paper introduces optimizing data sources to improve the performance of a OLAP system and the methods of optimizing database, aggregation and memorizing client record query.
通过优化数据源提高OLAP系统的性能，文章详细介绍了优化数据库、聚合及采用记录客户查询的方法。
Client resource index caching mechanism and the iterative query forward mechanism are adopted in the system design to enhance the search efficiency and success ratio.
系统采用客户资源索引缓存机制和“迭代深入”的查询转发机制，提高了搜索的效率和成功率。
Finally, research on these issues, designs and implements query processing system based on client-side semantic caching in mobile computing environment.
最后，通过对上述问题的研究，设计并实现移动计算环境下客户端语义缓存的查询系统。
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