Designing information-preserving mapping schemes for XML

Denilson Barbosa, Juliana Freire, Alberto O. Mendelzon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An XML-to-relational mapping scheme consists of a procedure for shredding documents into relational databases, a procedure for publishing databases back as documents, and a set of constraints the databases must satisfy. In previous work, we defined two notions of information preservation for mapping schemes: losslessness, which guarantees that any document can be reconstructed from its corresponding database; and validation, which requires every legal database to correspond to a valid document. We also described one information-preserving mapping scheme, called Edge ++, and showed that, under reasonable assumptions, losslessness and validation are both undecidable. This leads to the question we study in this paper: how to design mapping schemes that are information-preserving. We propose to do it by starting with a scheme known to be information-preserving and applying to it equivalence-preserving transformations written in weakly recursive ILOG. We study an instance of this framework, the LILO algorithm, and show that it provides significant performance improvements over Edge ++ and introduces constraints that are efficiently enforced in practice.

Original languageEnglish (US)
Title of host publicationVLDB 2005 - Proceedings of 31st International Conference on Very Large Data Bases
Pages109-120
Number of pages12
StatePublished - Dec 1 2005
EventVLDB 2005 - 31st International Conference on Very Large Data Bases - Trondheim, Norway
Duration: Aug 30 2005Sep 2 2005

Publication series

NameVLDB 2005 - Proceedings of 31st International Conference on Very Large Data Bases
Volume1

Other

OtherVLDB 2005 - 31st International Conference on Very Large Data Bases
CountryNorway
CityTrondheim
Period8/30/059/2/05

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Barbosa, D., Freire, J., & Mendelzon, A. O. (2005). Designing information-preserving mapping schemes for XML. In VLDB 2005 - Proceedings of 31st International Conference on Very Large Data Bases (pp. 109-120). (VLDB 2005 - Proceedings of 31st International Conference on Very Large Data Bases; Vol. 1).