| 物化视图选择中权限因子的设计 |
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| 引用本文： | 王伟皓,郑宁. 物化视图选择中权限因子的设计[J]. 计算机应用与软件, 2007, 24(10): 104-106,175 |
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| 作者姓名： | 王伟皓 郑宁 |
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| 作者单位： | 杭州电子科技大学计算机学院,浙江,杭州,310018 |
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| 摘 要： | 物化视图是数据仓库中提高查询效率的有效手段,物化视图的选择一直是数据仓库领域的研究热点.通过研究和实验,提出在物化视图选择中加入权限因子,将各候选视图的权限值纳入算法评价函数的计算中,使最终得到的物化视图集既能面向企业基层提供OLAP查询,又能保证企业决策层OLAP查询的速度.
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| 关 键 词： | 数据仓库 物化视图选择 权限因子 遗传算法 物化视图选择 因子 设计 SELECTION VIEWS FACTOR 速度 决策层 面向企业 查询效率 OLAP 基层 物化视图集 函数的计算 算法评价 权限值 实验 热点 研究 仓库领域 |
| 修稿时间： | 2005-10-08 |
DESIGN OF PRIVILEGE FACTOR IN MATERIALIZED VIEWS SELECTION |
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| Wang Weihao,Zheng Ning. DESIGN OF PRIVILEGE FACTOR IN MATERIALIZED VIEWS SELECTION[J]. Computer Applications and Software, 2007, 24(10): 104-106,175 |
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| Authors: | Wang Weihao Zheng Ning |
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| Affiliation: | School of Computer, Hangzhou Dianzi University, tlangzhou 310018, Zhejiang, China |
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| Abstract: | Materialized view is an effective method for improving the efficiency of enquires in data warehouse, and the selection of materialized views is one of the important issues in data warehouse domain. Privilege factor is added to algorithm of materialized views selection in order to deal with privilege value during the calculation process of evaluation function. In this way, the final selected collection of materialized views can not noly support the OLAP enquires for grass roots of enterprise, but also guarantee the response speed of the OLAP enquires for decision-layer of enterprises. |
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| Keywords: | Data warehouse Materialized views selection Privilege factor Genetic algorithm |
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