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RE: mapping a relational database as RDF

From: Chris Bizer <chris@bizer.de>
Date: Fri, 26 Mar 2004 11:07:56 +0100
Message-ID: <003201c4131a$38f9a9e0$1f12fea9@named4gc1asnuj>
To: <public-rdf-dawg@w3.org>
I'm currently working on an extended version of D2R MAP called D2RQ, which
will allow the general rewriting of RDQL and find(s,p,o) queries to database
specific SQL queries.

I have attached the current language specification and an example mapping
which shows how the ISWC ontology
(http://www.wiwiss.fu-berlin.de/suhl/bizer/d2rmap/iswc.daml.xml) is mapped
to a corresponding application specific relational schema
(http://www.wiwiss.fu-berlin.de/suhl/bizer/d2rmap/iswc.sql.txt). The example
also shows how D2RQ deals with taxonomical class structures in the ontology
and many-to-many relationships in the data base.

D2RQ is currently implemented as a plug-in for Jena 2.1. The first prototype
will be released sometime in May under an open source license.

Chris Bizer



Received on Friday, 26 March 2004 06:06:20 GMT

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