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Value-Mapped Peer Data Sharing Systems and Consistent Query Answering

by Mehedi Masud
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 66 - Number 24
Year of Publication: 2013
Authors: Mehedi Masud
10.5120/11261-6561

Mehedi Masud . Value-Mapped Peer Data Sharing Systems and Consistent Query Answering. International Journal of Computer Applications. 66, 24 ( March 2013), 1-6. DOI=10.5120/11261-6561

@article{ 10.5120/11261-6561,
author = { Mehedi Masud },
title = { Value-Mapped Peer Data Sharing Systems and Consistent Query Answering },
journal = { International Journal of Computer Applications },
issue_date = { March 2013 },
volume = { 66 },
number = { 24 },
month = { March },
year = { 2013 },
issn = { 0975-8887 },
pages = { 1-6 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume66/number24/11261-6561/ },
doi = { 10.5120/11261-6561 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:23:16.452820+05:30
%A Mehedi Masud
%T Value-Mapped Peer Data Sharing Systems and Consistent Query Answering
%J International Journal of Computer Applications
%@ 0975-8887
%V 66
%N 24
%P 1-6
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

A peer data sharing system consists of peers where a database in a peer is designed and administered autonomously. Acquaintances between peers are used to share data among peers. These acquaintances are established thorough data sharing constraints. Data between peers may be inconsistent with respect to constraints due to the change of constraints (e. g. adding, modifying, and deleting constraints between peers) and data updates in individual peer. One possible solution to resolve inconsistencies is to modify data physically in inconsistent peers through update propagation. This strategy is not practical since peers are autonomous and a peer may not have permission to modify other peers' data. Considering the possible inconsistent situations, this paper discusses a semantics and a technique for obtaining consistent answers. Consistent answers are obtained at query time by avoiding the inconsistent data.

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Index Terms

Computer Science
Information Sciences

Keywords

Data Interoperability mappings query processing data sharing

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