| 数据仓库预聚集增量更新的研究 |
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| 引用本文： | 黄光明.数据仓库预聚集增量更新的研究[J].贵阳金筑大学学报,2008(1):9-12. |
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| 作者姓名： | 黄光明 |
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| 作者单位： | 柳州职业技术学院信息工程系 广西柳州545006 |
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| 摘 要： | 数据仓库通常都包含预聚集。当数据源发生更新时，数据仓库及预聚集也必须随着更新。为了提高查询性能，重点探讨数据仓库预聚集更新问题，给出了预聚集更新的处理流程，并针对事实表更新及维表更新设计了相应的预聚集增量更新算法。
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| 关 键 词： | 数据仓库 预聚集 增量更新 |
Research on Pre-aggregation Incremental Update in Data Warehouse |
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| HUANG Guang-ming.Research on Pre-aggregation Incremental Update in Data Warehouse[J].Journal of Jinzhu University of Guiyang,2008(1):9-12. |
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| Authors: | HUANG Guang-ming |
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| Institution: | HUANG Guang-ming (Information Engineering Department, Liuzhou Vocational ＆ Technical College, Liuzhou Guangxi, 545006 ,China) |
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| Abstract: | In order to improve query performance,data warehouse usually contains pre-aggregation.When data source updates,data warehouse and pre-aggregation also correspondingly update.This paper mainly studies pre-aggregation update question of data warehouse,and gives processing flow of pre-aggregation update.It also designs corresponding algorithms of pre-aggregation incremental update according to the fact table and dimension table update. |
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| Keywords: | data warehouse pre-aggregation incremental update |
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