| 面向对象数据库中基于有向图的联系代数 |
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| 引用本文： | 吴胜利 王能斌. 面向对象数据库中基于有向图的联系代数[J]. 计算机学报, 1997, 20(1): 58-67 |
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| 作者姓名： | 吴胜利 王能斌 |
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| 作者单位： | 东南大学计算机科学与工程系 |
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| 摘 要： | 本文提出了基于基有向图的联系代数，并给出了一个优化联系代数表达的算法。本文所提出的改进较其原形式能 更精确地反映面向对象模型的实质，更有利于对象的查询处理与优化。
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| 关 键 词： | 面向对象 数据库 联系代数 查询优化 |
DIRECTED GRAPH BASED ASSOCIATION ALGEBRA FOR OBJECT-ORIENTED DATABASES |
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| WU Shengli, WANG Nengbin. DIRECTED GRAPH BASED ASSOCIATION ALGEBRA FOR OBJECT-ORIENTED DATABASES[J]. Chinese Journal of Computers, 1997, 20(1): 58-67 |
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| Authors: | WU Shengli WANG Nengbin |
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| Abstract: | This paper presents directed graph based association algebra which is an important improvement of nondirected graph based association algebra worked outby S. Y. W. Su et al,and gives an algorithm for optimizing association algebraic expressions. Directed graph based association algebra can reflect more precisely theintrinsic quality of object-oriented models and has more advantage over query processing and optimization of objects than its nondirected graph based counterpart. |
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| Keywords: | Object-oriented database association algebra query optimization. |
| 本文献已被 CNKI 维普 等数据库收录！ |
