Source-Aware Repairs for Inconsistent Databases

Author

Viswanath, Navin ; Sunderraman, Rajshekhar

Author_Institution

Dept. of Comput. Sci., Georgia State Univ., Atlanta, GA

fYear

2009

fDate

1-6 March 2009

Firstpage

125

Lastpage

130

Abstract

The problem of extracting consistent query answers from an inconsistent database has been mainly approached from two directions: ldquorepairingrdquo the database or rewriting queries so that only consistent answers are returned. Logic programming with explicit negation has been widely used in order to specify repairs such that each answer set of the repair program corresponds to a repair. In this paper, we explore the problem of obtaining so called ldquopreferred repairsrdquo from a database that is both inconsistent and incomplete based on preferences for the source from which the information is obtained. We show how a preferred repair might be specified using logic programs when source information is available.

Keywords

logic programming; query formulation; relational databases; extracting consistent query answer; inconsistent database; logic programming; relational database; rewriting query; source-aware repair program; Application software; Computer science; Data mining; Data models; Logic programming; Relational databases; Inconsistent Databases; Logic Programming.; Repairs; Source Information;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Databases, Knowledge, and Data Applications, 2009. DBKDA '09. First International Conference on

Conference_Location

Gosier

Print_ISBN

978-1-4244-3467-1

Electronic_ISBN

978-0-7695-3550-0

Type

conf

DOI

10.1109/DBKDA.2009.15

Filename

5071823