| 摘要: |
| 研究了数据仓库中一般的实视图选取策略，定义一种利益代价图——BC图(Benefits Cost Graph)，并以BC图为基础给出了选取实视图集的算法.最后，将BC图扩展为BC＋图，解决带索引的实视图的选取问题. |
| 关键词: 实视图,数据仓库. |
| DOI： |
| 分类号: |
| 基金项目:本文研究得到国家自然科学基金资助. |
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| Approach to Selecting Materialized Views and Its Implementation |
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ZHANG Yi-hong,XU Hong-bing,WANG Neng-bin
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| Abstract: |
| In this paper, the authors propose a general approach to selecting materialized views, and define a structure named BC graph(benefit-cost graph) as the basis for selection of materialized views. A algorithm based on BC graph is then presented for such selection. Finally, it extends BC graph to BC＋ graph to take account of indices associated with views. |
| Key words: Materialized views, data warehouse. |
