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

Authors Babak Salimi, Leopoldo Bertossi



PDF
Thumbnail PDF

File

LIPIcs.ICDT.2015.342.pdf
  • Filesize: 0.53 MB
  • 21 pages

Document Identifiers

Author Details

Babak Salimi
Leopoldo Bertossi

Cite AsGet BibTex

Babak Salimi and Leopoldo Bertossi. From Causes for Database Queries to Repairs and Model-Based Diagnosis and Back. In 18th International Conference on Database Theory (ICDT 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 31, pp. 342-362, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)
https://doi.org/10.4230/LIPIcs.ICDT.2015.342

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.
Keywords
  • causality,diagnosis,repairs,consistent query answering,integrity constraints

Metrics

  • Access Statistics
  • Total Accesses (updated on a weekly basis)
    0
    PDF Downloads
Questions / Remarks / Feedback
X

Feedback for Dagstuhl Publishing


Thanks for your feedback!

Feedback submitted

Could not send message

Please try again later or send an E-mail