Free University of Bolzano/Bozen
Bolzano - Innsbruck - Trento (BIT) PhD Summer School
Bressanone, July 3-7, 2006

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Query Processing in Data Integration

Diego Calvanese

Data integration is the problem of combining data residing at different sources, and providing the user with a unified view of these data. The problem of designing and operating data integration systems is important in current real world applications, and is characterized by a number of issues that are interesting from a theoretical point of view. In this seminar we focus on some of the theoretical issues that are relevant for data integration. Specifically, we investigate the different approaches for modeling a data integration system, and we analyze semantic and computational issues related to query processing in data integration systems. A key aspect is the tight connection between the latter problem and the problem of query processing in the presence of constraints and incomplete information.

Program and course material

  1. Introduction to data integration

  2. Query answering in the absence of constraints

  3. Query answering in the presence of constraints

  4. Conclusions and references
Complete set of slides

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Last modified: Monday, 7-Sep-2009 8:11:17 CEST