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Querying Relational Databases with RDQL

full text: PDF
author/s: Cristian Pérez de Laborda, Stefan Conrad
editor:Rainer Eckstein, Robert Tolksdorf
booktitle:Berliner XML Tage 2005
publisher:Freie Universität, Berlin; Humboldt-Universität, Berlin
address:Berlin, Germany

Most Semantic Web applications are still unable to query data stored in relational databases using their own built-in functionality. Hence, needing access to such data, they have to fall back on SQL and the relational model. In this paper we describe Relational.OWL, our technique to automatically extract the semantics of relational databases and transform this information into a machine processable and understandable representation. Since this data can now be queried using semantic query languages, it has to be analyzed whether this combination of Relational.OWL and e.g. RDQL can be a real alternative to the commonly used SQL access to relational data.

Heinrich Heine Universität

Datenbanken und Informationssysteme


Prof. Dr. Stefan Conrad

Universitätsstr. 1
40225 Düsseldorf
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Fax: +49 211 81-13463


Sabine Freese

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Mo-Do: 13:00-14:30 Uhr

Universitätsstr. 1
40225 Düsseldorf
Gebäude: 25.12
Etage/Raum: 02.22
Tel.: +49 211 81-11312
Fax: +49 211 81-13463
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