文献类型：期刊文献

英文题名：Method of selecting materialized views in data warehouse

作者：Leng, Chun-Xia

机构：[1] Department of Computer Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2005

卷号：31

期号：2

起止页码：203

外文期刊名：Huadong Ligong Daxue Xuebao /Journal of East China University of Science and Technology

收录：EI(收录号：2005209110092)

语种：英文

摘要：Materialized view is an important method for improving query performance in data warehouse system and its selection is a research hot. In this paper, we use directed-acyclic graph (DAG) to represent a query processing, then define a cost model and a query efficiency model, and finally put forward an algorithm for materialized views selection.