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RE: Need Help With Relational Databases and RDF, JENA

From: Dickinson, Ian J. (HP Labs, Bristol, UK) <ian.dickinson@hp.com>
Date: Thu, 21 Feb 2008 10:21:24 +0000
To: virgo091085 <virgo091085@hotmail.com>, "semantic-web@w3.org" <semantic-web@w3.org>
Message-ID: <01512B4E7B0366408DD06D7EE4DF77006AA67AD832@G5W0276.americas.hpqcorp.net>

Hello Lora,
To view and query existing relational data as RDF triples, use D2RQ:


To add more axioms or otherwise change your ontology, either make a copy of the OWL source and edit it, or create a new ontology which owl:imports the existing ontology and adds your new class and property definitions.

Jena doesn't require you to "integrate" an ontology, you just read it into an OntModel and start processing. To ask particular Jena support questions, please post to the Jena list:


It generally helps if your questions are as specific and detailed as possible. Do read the tutorial and other documentation first.

Hope that helps,

Ian Dickinson   http://www.hpl.hp.com/personal/Ian_Dickinson
HP Laboratories Bristol          mailto:ian.dickinson@hp.com
Hewlett-Packard Limited        Registered No: 690597 England
Registered Office:      Cain Road, Bracknell, Berks RG12 1HN
Received on Thursday, 21 February 2008 10:23:09 UTC

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