| 递归维概念及其操作的研究 |
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| 引用本文： | 袁霖,李战怀,徐秋元.递归维概念及其操作的研究[J].计算机科学,2003,30(10):7-10. |
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| 作者姓名： | 袁霖 李战怀 徐秋元 |
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| 作者单位： | 西北工业大学计算机系,西安,710072 |
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| 基金项目： | 国家自然科学基金(60073055)，西北工业大学博士论文创新基金 |
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| 摘 要： | Dimensions are an essential part in multi-dimensional data model (MDDM) for OLAP. Hierarchical structure of dimension allows the user to study measures in different levels of details. This paper focuses on a special kind of dimension with an unbalanced-hierarchy designed to support self-referencing dimension table in data warehouses, called recursive dimension, which is largely ignored by research area. So we extend MDDM to represent it and corresponding operations. Finally we show how it can be implemented in object-relational DBMS environment.
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| 关 键 词： | 数据仓库 递归维概念 操作 多维数据模型 数据库 数据集 |
The Concept of Recursive Dimension and Corresponding Operations |
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| YUAN Lin LI Zhan-Huai XU Qiu-Yuan.The Concept of Recursive Dimension and Corresponding Operations[J].Computer Science,2003,30(10):7-10. |
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| Authors: | YUAN Lin LI Zhan-Huai XU Qiu-Yuan |
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| Abstract: | Dimensions are an essential part in multi-dimensional data model (MDDM) for OLAP. Hierarchical structure of dimension allows the user to study measures in different levels of details. This paper focuses on a special kind of dimension with an unbalanced-hierarchy designed to support self-referencing dimension table in data warehouses, called recursive dimension, which is largely ignored by research area. So we extend MDDM to represent it and corresponding operations. Finally we show how it can be implemented in object-relational DBMS environment. |
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| Keywords: | Recursive dimension Multi-dimensional data model OLAP |
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