摘要
在数据仓库以及联机分析处理等许多领域中 ,聚集数据的处理是一个非常重要的核心问题。本文分析了聚集数据查询的特点 ,引入了基于聚集数据的近似查询计算模型 ,并针对该计算模型的提纲构建问题 ,给出了一类近似查询提纲的Haar小波方法 ,来实现对聚集数据和聚集视图的快速查询计算。
The manipulation of aggregate data is now a fundamental issue in many areas such as data warehousing ,OLAP systems,etc.We show the characteristic of aggregate data query,introducing a kind of approximate query computation plan with which query aggregate data and views could be query rapidly.For improve the efficiency of aggregate query,we give a wavelet based synopses on approximate query computation.
出处
《计算机应用与软件》
CSCD
北大核心
2004年第4期25-26,83,共3页
Computer Applications and Software
