Formal equivalence classes model of fuzzy relational databases using relational calculus

2017 ◽  
Author(s):  
Mohammad Deni Akbar ◽  
Yoshihiro Mizoguchi
Keyword(s):  
Relational Databases ◽  
Equivalence Classes ◽  
Formal Equivalence ◽  
Relational Calculus

An equivalence classes model of fuzzy relational databases

1990 ◽  
Vol 38 (2) ◽  
pp. 153-170 ◽  
Author(s):  
Sujeet Shenoi ◽  
Austin Melton ◽  
L.T. Fan
Keyword(s):  
Relational Databases ◽  
Equivalence Classes

A Constructed Method of the Hash Function for the Rough Relational Databases

2013 ◽  
Vol 427-429 ◽  
pp. 2588-2591
Author(s):  
Ling Ling Wei ◽  
Wei Yang
Keyword(s):  
Relational Database ◽  
Hash Function ◽  
Relational Databases ◽  
Processing Method ◽  
Equivalence Classes ◽  
Binary String ◽  
Data Item ◽  
Decimal Number ◽  
Multiple Value ◽  
In Virtue Of

Rough relational database model provided a processing method for uncertainty data, So based on the Hash technology and the data characteristic of rough relational database, it was researched the multiple value data item in the rough relational database represented by binary string in virtue of equivalence classes, calculated its decimal value, and constructed Hash Function. Then according to the decimal number distributed Hash address where stored the data of the rough relational databases. Finally, an algorithm for constructed method of Hash function for the rough relational databases was described and illustrated by an example,and proved the method is validity and practicability.

XML Modeling of Fuzzy Data with Relational Databases

2011 ◽  
Vol 34 (2) ◽  
pp. 291-303 ◽  
Author(s):  
Li YAN ◽  
Zong-Min MA ◽  
Jian LIU ◽  
Fu ZHANG
Keyword(s):  
Relational Databases ◽  
Fuzzy Data
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