RE: Need Help With Relational Databases and RDF, JENA

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

http://www4.wiwiss.fu-berlin.de/bizer/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:

http://tech.groups.yahoo.com/group/jena-dev

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

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Ian Dickinson   http://www.hpl.hp.com/personal/Ian_Dickinson
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