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A Systematic Study of the Relationship between RRDB and FRDB 被引量：2

A Systematic Study of the Relationship between RRDB and FRDB
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摘要 In this paper, based on rough set theory and relational database, the relationship between rough relational database (RRDB) and fuzzy relational database (FRDB) is analyzed systematically from functional dependency, normal form and Armstrong axiom. The results show that both fuzzy functional dependency and rough functional dependency are the generalizations of classical functional dependency.Fuzzy normal form is the expansion of classical normal form while rough normal form is an independent system.RRDB and FRDB obey Armstrong axiom to some extent from the point of view of inference rule. In this paper, based on rough set theory and relational database, the relationship between rough relational database （RRDB） and fuzzy relational database （FRDB） is analyzed systematically from functional dependency, normal form and Armstrong axiom. The results show that both fuzzy functional dependency and rough functional dependency are the generalizations of classical functional dependency. Fuzzy normal form is the expansion of classical normal form while rough normal form is an independent system. RRDB and FRDB obey Armstrong axiom to some extent from the point of view of inference rule.
作者 Shumei Tang Qiusheng An
机构地区 Shanxi Normal University
出处 《南昌工程学院学报》 CAS 2006年第2期117-121,共5页 Journal of Nanchang Institute of Technology
基金 NaturalScienceFoundationofShanxiProvince(No .2006011038 ).
关键词 functional dependency normal form rough set RRDB FRDB functional dependency normal form rough set RRDB FRDB
分类号 TV [水利工程]
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参考文献7

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同被引文献18

  • 1郭景峰,李莉,宫继兵.粗关系数据库中的粗函数依赖研究[J].计算机科学,2004,31(9):90-92. 被引量：10
  • 2邹晓红.基于模糊粗糙集理论的信息检索方法的研究[J].燕山大学学报,2005,29(4):356-359. 被引量：2
  • 3王丹,吴孟达,刘银山.粗糙关系数据库空间结构及其粗糙集模型[J].计算机工程与应用,2005,41(34):163-167. 被引量：8
  • 4胡可云 陆玉昌 王驹 等.多值粗糙集模型.计算机科学,2001,28(5):1-4.
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南昌工程学院学报
2006年 第2期

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