| 数据仓库的多维数据模型研究 |
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| 引用本文： | 邵晓巍,赵长安,赵景珠,邵长胜. 数据仓库的多维数据模型研究[J]. 计算机工程与应用, 2004, 40(11): 4-7,86 |
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| 作者姓名： | 邵晓巍 赵长安 赵景珠 邵长胜 |
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| 作者单位： | 哈尔滨工业大学航天学院,哈尔滨,150001;哈尔滨工业大学航天学院,哈尔滨,150001;哈尔滨工业大学航天学院,哈尔滨,150001;哈尔滨工业大学航天学院,哈尔滨,150001 |
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| 基金项目： | 航天“十五”支撑技术预研，国家部委科技预研重点项目 |
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| 摘 要： | 作为数据仓库设计的核心和基础,数据模型的研究直接影响到决策支持技术的发展。该文首先在对OLAP的需要分析基础上,提出了研究数据模型应该满足的六点约束,并分析了现有模型的优缺点。然后,针对这六点约束,引进分维函数建立多维模型视图,利用聚集偏序集族定义维的结构,提出了一种多维数据模型,并给出了以OLAP操作为核心的操作代数。
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| 关 键 词： | 多维数据模型 OLAP 模型视图 聚集偏序 |
| 文章编号： | 1002-8331-(2004)11-0004-04 |
The Study of Multi-Dimension Data Model for Data Warehouse |
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| Shao Xiaowei Zhao Changan Zhao Jingzhu Shao Changsheng. The Study of Multi-Dimension Data Model for Data Warehouse[J]. Computer Engineering and Applications, 2004, 40(11): 4-7,86 |
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| Authors: | Shao Xiaowei Zhao Changan Zhao Jingzhu Shao Changsheng |
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| Abstract: | To be the ba si c and core accept of data warehouse designing,the study of data model is effec ting the development of decision support technology deeply.In this paper,base d on the necessary of OLAP,six constraints of data modeling are presented.Afte r analysing the existing data models,under these constrains,a new data model i s presented,which has data model view with partition function,and uses the agg regation function to support the complex multi hierarchies.Along with the model ,an associated algebra that includes a set of OLAP operations and supports comp lex aggregation is also presented. |
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| Keywords: | Multi-dimension data model OLAP Data model view Aggregation partial function |
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