【作者】 匡天祺； 薛永生； 张伟； 翁伟；

【机构】 厦门大学软件学院； 厦门大学计算机科学系；

【摘要】 <正>数据仓库中庞大的数据量和应用在数据仓库上的OLAP查询的复杂性,使得OLAP处理通常要花很长时间,有时这个时间是不可接受的。物化视图是提高数据仓库性能的有效手段。物化视图是事先计算好的聚集数据或在OLAP中经常使用的数据,并更多还原

【Abstract】 The method of incremental maintenance computes the changed data only from the last update,so the data and the time for update is less and the performance of data warehouse is affected little.Many algorithms were proposed.The algorithm in this paper regards all materialized views in data warehouse as a update integer,it parts the base relations in their definition and defines them as medium views and searches the same parts between these medium views and defines them as auxiliary views and save them in the data warehouse,so the auxiliary views can be reused between materialized views and the update is speed-up.更多还原