License: Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
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DOI: 10.4230/DFU.Vol5.10452.129
URN: urn:nbn:de:0030-drops-42929
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Guagliardo, Paolo ; Wieczorek, Piotr

Query Processing in Data Integration

ch05-guagliardo.pdf (0.7 MB)


In this chapter we illustrate the main techniques for processing queries in data integration. The first part of the chapter focuses on the problem of query answering in the relational setting, and describes approaches based on variants of the chase, along with how to deal with integrity constraints and access patterns. The second part of the chapter investigates query processing in the context of semistructured data, which is best described by graph-based data models, where the expressiveness of query languages not common in traditional database systems allows to point out the subtle differences between query answering and query rewriting. The chapter is closed by a very brief discussion of query processing in data integration with XML and ontologies.

BibTeX - Entry

  author =	{Paolo Guagliardo and Piotr Wieczorek},
  title =	{{Query Processing in Data Integration}},
  booktitle =	{Data Exchange, Integration, and Streams},
  pages =	{129--160},
  series =	{Dagstuhl Follow-Ups},
  ISBN =	{978-3-939897-61-3},
  ISSN =	{1868-8977},
  year =	{2013},
  volume =	{5},
  editor =	{Phokion G. Kolaitis and Maurizio Lenzerini and Nicole Schweikardt},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-42929},
  doi =		{10.4230/DFU.Vol5.10452.129},
  annote =	{Keywords: Query processing, Data integration, Relational data, Semistructured data}

Keywords: Query processing, Data integration, Relational data, Semistructured data
Collection: Data Exchange, Integration, and Streams
Issue Date: 2013
Date of publication: 18.10.2013

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