Rough Relational Calculus

被引：0
|
作者：
Wei, Lingling [1 ]
Yao, Leiyue [1 ]
Xie, Qianglai [1 ]
机构：
[1] JiangXi BlueSky Univ, Software Inst, Nanchang 330029, Jiangxi, Peoples R China
来源：
ADVANCING KNOWLEDGE DISCOVERY AND DATA MINING TECHNOLOGIES, PROCEEDINGS | 2009年
关键词：
rough relations; rough relational database; rough tuple relational calculus; domain relational calculus;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
The theory of rough relational database model (RRDM) is introduced with a geographical information table of the rough relational database (RRDB) as its example. Then, based on the relational calculus of the relational database, rough tuple relational calculus and rough domain relational calculus are mainly studied by importing the prediction of symbolic logic into rough relational operation of the rough relational database. Moreover, the form of relation algebra expression is transformed into the rough tuple and domain relational calculus expression are studied by combining relevantly example, accordingly, the rough relational database theory has been extended dramatically.
引用
收藏
页码：5 / 9
页数：5
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