License: Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ICDT.2015.342
URN: urn:nbn:de:0030-drops-49948
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2015/4994/
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Salimi, Babak ; Bertossi, Leopoldo

From Causes for Database Queries to Repairs and Model-Based Diagnosis and Back

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Abstract

In this work we establish and investigate connections between causality for query answers in databases, database repairs wrt. denial constraints, and consistency-based diagnosis. The first two are relatively new problems in databases, and the third one is an established subject in knowledge representation. We show how to obtain database repairs from causes and the other way around. Causality problems are formulated as diagnosis problems, and the diagnoses provide causes and their responsibilities. The vast body of research on database repairs can be applied to the newer problem of determining actual causes for query answers and their responsibilities. These connections, which are interesting per se, allow us, after a transition-inspired by consistency-based diagnosis- to computational problems on hitting sets and vertex covers in hypergraphs, to obtain several new algorithmic and complexity results for database causality.

BibTeX - Entry

@InProceedings{salimi_et_al:LIPIcs:2015:4994,
  author =	{Babak Salimi and Leopoldo Bertossi},
  title =	{{From Causes for Database Queries to Repairs and Model-Based Diagnosis and Back}},
  booktitle =	{18th International Conference on Database Theory (ICDT 2015)},
  pages =	{342--362},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-79-8},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{31},
  editor =	{Marcelo Arenas and Mart{\'i}n Ugarte},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2015/4994},
  URN =		{urn:nbn:de:0030-drops-49948},
  doi =		{10.4230/LIPIcs.ICDT.2015.342},
  annote =	{Keywords: causality,diagnosis,repairs,consistent query answering,integrity constraints}
}

Keywords: causality,diagnosis,repairs,consistent query answering,integrity constraints
Collection: 18th International Conference on Database Theory (ICDT 2015)
Issue Date: 2015
Date of publication: 19.03.2015

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