{"title":"Source-Aware Repairs for Inconsistent Databases","authors":"N. Viswanath, Rajshekhar Sunderraman","doi":"10.1109/DBKDA.2009.15","DOIUrl":null,"url":null,"abstract":"The problem of extracting consistent query answers from an inconsistent database has been mainly approached from two directions: “repairing” 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 “preferred repairs” 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.","PeriodicalId":231150,"journal":{"name":"2009 First International Confernce on Advances in Databases, Knowledge, and Data Applications","volume":"424 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 First International Confernce on Advances in Databases, Knowledge, and Data Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/DBKDA.2009.15","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The problem of extracting consistent query answers from an inconsistent database has been mainly approached from two directions: “repairing” 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 “preferred repairs” 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.
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