| 基于语义贴近度的模糊数据依赖 |
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| 引用本文： | 刘惟一.基于语义贴近度的模糊数据依赖[J].计算机学报,1997,20(8):725-730. |
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| 作者姓名： | 刘惟一 |
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| 作者单位： | 云南大学计算机科学系 |
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| 摘 要： | 本文基于语义贴近度的概念给出了模糊函数依赖（ＦＦＤ）、模糊多值依赖（ＦＭＶＤ）和模型联接依赖（ＦＪＤ）的定义。本文得到一组类似于Ａｒｍｓｔｒｏｎｇ公理的正确、完备的ＦＦＤ和ＦＭＶＤ的推理规则。进一步，我们证明了经典数据依赖满足模糊数据依赖的定义，ＦＦＤ是ＦＭＶＤ的特例，而ＦＭＶＤ又是ＦＪＤ的特例。
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| 关 键 词： | 关系数据库 语义贴近度 模糊数据依赖 数据库 |
THE FUZZY DATA DEPENDENCIES BASED ON THE SEMANTIC PROXIMITY |
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| LIU Weiyi.THE FUZZY DATA DEPENDENCIES BASED ON THE SEMANTIC PROXIMITY[J].Chinese Journal of Computers,1997,20(8):725-730. |
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| Authors: | LIU Weiyi |
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| Abstract: | In this paper, the definitions of fuzzy functional dependency (FFD),fuzzy multivalued dependency (FMVD) and fuzzy join dependency (FJD) are given.It is shown that the inference rules of FFDs and FMVDs, which are similar to classical case for Armstrong's Axioms, are sound and complete, and a classical data dependency satisfies the definition of a fuzzy data dependency, also FFD can beviewed as an FMVD and an FMVD can be viewed as an FJD. |
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| Keywords: | Relational database semantic proximity fuzzy data dependency |
| 本文献已被 CNKI 维普 等数据库收录！ |
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