| 一个基于实化聚集视图的近似查询计算模型及其应用 |
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| 引用本文： | 陈昕,陈维兴,庄雷,苏锦祥. 一个基于实化聚集视图的近似查询计算模型及其应用[J]. 计算机工程与应用, 2004, 40(11): 168-170 |
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| 作者姓名： | 陈昕 陈维兴 庄雷 苏锦祥 |
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| 作者单位： | 北京信息工程学院计算机信息系统系,北京,100101;郑州大学计算机科学系,郑州,450052 |
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| 基金项目： | 国家自然科学基金项目(编号:69873040) |
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| 摘 要： | 在数据仓库、大量交易记录系统、移动计算、联机分析处理系统(OLAP)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。该文首先分析了聚集数据查询的特点,引入了聚集查询语言和聚集查询重写;其次对于聚集查询环境下如何实现快速查询,给出了一个基于聚集数据的近似查询计算模型;最后将该计算模型应用于人口统计系统,从而实现对统计信息类数据进行快速的查询处理,获得有效的查询结果。
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| 关 键 词： | 聚集数据 聚集实化视图 近似计算模型 统计应用 |
| 文章编号： | 1002-8331-(2004)11-0168-03 |
Aggregate Views-Based Approximate Query Computation Model and Application |
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| Chen Xin Chen Weixing Zhuang Lei Su Jinxiang. Aggregate Views-Based Approximate Query Computation Model and Application[J]. Computer Engineering and Applications, 2004, 40(11): 168-170 |
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| Authors: | Chen Xin Chen Weixing Zhuang Lei Su Jinxiang |
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| Affiliation: | Chen Xin 1 Chen Weixing 1 Zhuang Lei 2 Su Jinxiang 21 |
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| Abstract: | The manipulation of aggregate data is now a fundamental issue in m any areas such as data warehousing,a very large trade record system,mobile com puting,OLAP systems ,etc.Firstly the paper shows the characteristic of aggre gate data query,introduces a kind of aggregate query language and aggregate que ry rewriting.Secondly it gives a kind of approximate query computing model with which query aggregate data and views could be queried rapidly.At last,for r ealizing the quick and efficient answer to statistic data query,it applies the approximate computing model into a population statistic system,and achieves ef fective approximate answers. |
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| Keywords: | Aggregate data Aggregate materialized view Approximate computing model Statistic application |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
