【摘要】 在联机分析处理(OLAP)环境中,为了提高多维查询的响应速度,服务器需要特殊的查询优化技术,比较流行的做法是,服务器动态地有选择地对查询结果进行缓存。本文在客户端也引入相同的缓存机制,这种方法能有效地降低服务器载荷;对于在数据仓库进行增量维护时,客户/服务器中两级缓存中语义数据的一致性问题及其对查询的影响进行了研究。更多还原

【Abstract】 A architecture based on two level aggregate view cache in client/server being brought to OLAP environment,can greatly decrease the load of OLAP server.After deeply analysing the increase rate of the aggregate data of multidimentsion andmultigranularity,a new method called"patch update"used to update the materialized view in the buffer of the client,has been proposed to further decrease the load of the server and the traffic of network.更多还原