Title :
Source-Aware Repairs for Inconsistent Databases
Author :
Viswanath, Navin ; Sunderraman, Rajshekhar
Author_Institution :
Dept. of Comput. Sci., Georgia State Univ., Atlanta, GA
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;
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
DOI :
10.1109/DBKDA.2009.15
