So, you got a relational database and you want to use it in jena as an
ontology?

If that's the case, you can use D2RQ, which provides a Jena model, given a
mapping file and a database connection.

--
diogo patrĂ£o




On Thu, Apr 25, 2013 at 11:54 AM, huma seemab <[email protected]> wrote:

> I am doing thesis in
> semantic web domain.My work is
>
> 1.select some standard
> ontology(in Owl syntax)
> 2.extract metadata(
> ontology classes, properties etc) using jena and Sparql. I have complete
> these
> two steps.
>
>
> now i have to complete
> the following work and i need your help
>
> 3.create database
> connection in jena
> 4 first map ontology
> classes into relational database tables and then other components of
> ontology
> according to mapping rules e.g some properties convert into tables and
> some i
> rows etc.
>
>
>
>
>
> ________________________________
>  From: Chris Dollin <[email protected]>
> To: [email protected]
> Sent: Thursday, 25 April 2013 12:52 PM
> Subject: Re: transformation of ontology into relational database
>
>
> On Wednesday, April 24, 2013 10:40:4 huma seemab wrote:
> > i have extracted classes of ontology by using jena and sparql, now i
> wants
> > to convert these classes into relational database tables using jena.....
> > kindly guide how can i do this.
>
> That depends.
>
> What is the relational database going to be used for or by?
>
> Would using Jena's SDB -- which stores RDF in a SQL database do the
> job?
>
> Do you already know how to use a database from Java?
>
> Who defines what the table layout is -- you, or someone else?
>
> Chris
>
> --
> "The wizard seemed quite willing when I talked to him."  /Howl's Moving
> Castle/
>
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