Paper Info
Title
A Fuzzy Temporal Object-Relational Database: Model and Implementation
Abstract
AbstractIn real world, some data have a specific temporal validity that must be appropiately managed. To deal with this kind of data, several proposals of temporal databases have been introduced. Moreover, time can also be affected by imprecision, vagueness, and/or uncertainty, since human beings manage time using temporal indications and temporal notions, which may also be imprecise. For this reason, information systems require appropriate support to accomplish this task. In this work, we present a novel possibilistic valid time model for fuzzy databases including the data structures, the integrity constraints, and the DML. Together with this model, we also present its implementation by means of a fuzzy valid time support module on top of a fuzzy object-relational database system. The integration of these modules allows to perform queries that combines fuzzy valid time constraints together with fuzzy predicates. Besides, the model and implementation proposed support the crisp valid time model as a particular case of the fuzzy valid time support provided.
Year
DOI
Venue
2014
10.1002/int.21666
Periodicals
Field
DocType
Volume
Data mining,Valid time,Fuzzy classification,Defuzzification,Fuzzy set operations,Computer science,Fuzzy logic,Temporal database,Fuzzy number,Type-2 fuzzy sets and systems
Journal
29
Issue
ISSN
Citations 
9
0884-8173
5
PageRank 
References 
Authors
0.49
15
4
Name
Order
Citations
PageRank
Juan Miguel Medina127224.24
Jose Enrique Pons2374.61
Carlos D. Barranco35011.26
Olga Pons427421.67