International Journal of Computational Intelligence Systems

Volume 5, Issue 6, November 2012, Pages 1068 - 1088

A Relational Model for the Possibilistic Valid-time Approach

Authors
Jose Enrique Pons, Nicolás Marín, Olga Pons, Christophe Billiet, Guy de Tré
Corresponding Author
Jose Enrique Pons
Received 16 July 2012, Accepted 18 July 2012, Available Online 1 November 2012.
DOI
https://doi.org/10.1080/18756891.2012.747662How to use a DOI?
Keywords
fuzzy, temporal, database
Abstract

In real world, it is very common that some objects or concepts have properties with a time-variant or timerelated nature. Modelling this kind of objects or concepts in a (relational) database schema is possible, but time-variant and time-related attributes have an impact on the consistency of the entire database and must be appropriately managed. Therefore, temporal database models have been proposed to deal with this problem in the literature. Time can be affected by imprecision, vagueness and / or uncertainty, since existing time measuring devices are inherently imperfect. Additionally, human beings manage time using temporal indications and temporal notions, which may also be imprecise. However, the imperfection in human-used temporal indications is supported by human interpretation, whereas information systems need appropriate support in order to accomplish this task. Several proposals for dealing with such imperfections when modelling temporal data exist. Some of these proposals transform the temporal data into a compact representation but there is not a formal model for managing and handling uncertainty regarding temporal information. In this work we present a novel model to deal with imprecision in valid-time databases together with the definition and implementation of the data manipulation language, .

Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Journal
International Journal of Computational Intelligence Systems
Volume-Issue
5 - 6
Pages
1068 - 1088
Publication Date
2012/11/01
ISSN (Online)
1875-6883
ISSN (Print)
1875-6891
DOI
https://doi.org/10.1080/18756891.2012.747662How to use a DOI?
Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - JOUR
AU  - Jose Enrique Pons
AU  - Nicolás Marín
AU  - Olga Pons
AU  - Christophe Billiet
AU  - Guy de Tré
PY  - 2012
DA  - 2012/11/01
TI  - A Relational Model for the Possibilistic Valid-time Approach
JO  - International Journal of Computational Intelligence Systems
SP  - 1068
EP  - 1088
VL  - 5
IS  - 6
SN  - 1875-6883
UR  - https://doi.org/10.1080/18756891.2012.747662
DO  - https://doi.org/10.1080/18756891.2012.747662
ID  - Pons2012
ER  -