【摘要】 异构数据集成系统需要集成大量不同数据源的数据 ,查询效率倍受关注。文章提出采用基于移动智能体技术的预取、缓存和基于机群的数据分布相结合的查询优化策略 ,以提高异构数据集成系统的查询效率。更多还原

【Abstract】 The heterogeneous data integration system integrates a large amount of heterogeneous data, whose query efficiency has been paid close attention. In this paper we point out the query optimization tactics based on prefetching, cache and data distributing and mobile agent technology in order to improve the query efficiency.更多还原