Re: RDB2RDF by Revelytix

Hi Alex,

I was looking forward to your talk at Semtech but due to so many talks, I
guess I missed it.  I did check out your slides but you guys don't have any
specifics on your mapping language.

I do think that it would be great if you could give us a presentation of
your mapping language.

BTW, your email went in, but I'm not sure if you can join the weekly calls.
Harry? Michael?

Juan Sequeda
+1-575-SEQ-UEDA
www.juansequeda.com


On Sun, Jul 18, 2010 at 2:15 PM, Alex Miller <alexdmiller@yahoo.com> wrote:

> Hello all, I'm not sure whether I have rights to post here as an observer
> but maybe someone can moderate me in if not.  Is it ok for non-members of
> the WG to join the weekly calls?
>
> I'm happy to do a presentation about our work at Revelytix if there's
> interest.  I've been following your list closely as many of the
> conversations echo our own.  I actually did a presentation on our work at
> Semtech - I was hoping to see some people from RDB2RDF there, but perhaps I
> should have written the blog post *before* Semtech instead of after. :)
>
> I should mention that while we have developed our own mapping language,
> we're open-minded in terms of the longer-term direction.  The implementation
> of our query translator is flexible enough that I believe we could import
> many kinds of mappings (D2RQ, future RDB2RDF definition, etc) without
> affecting the query translation capabilities.
>
> Alex
>
> ------------------------------
> *From:* Michael Hausenblas <michael.hausenblas@deri.org>
> *To:* Juan Sequeda <juanfederico@gmail.com>
> *Cc:* RDB2RDF WG <public-rdb2rdf-wg@w3.org>
> *Sent:* Sun, July 18, 2010 11:07:56 AM
> *Subject:* Re: RDB2RDF by Revelytix
>
>
> > Maybe we should invite them to give a presentation?
>
> Yup, good idea - done [1] (Alex and I follow each other on Twitter ...).
>
> Cheers,
>       Michael
>
> [1] http://twitter.com/mhausenblas/status/18848984267
>
> --
> Dr. Michael Hausenblas
> LiDRC - Linked Data Research Centre
> DERI - Digital Enterprise Research Institute
> NUIG - National University of Ireland, Galway
> Ireland, Europe
> Tel. +353 91 495730
> http://linkeddata.deri.ie/
> http://sw-app.org/about.html
>
>
>
> > From: Juan Sequeda <juanfederico@gmail.com>
> > Date: Sun, 18 Jul 2010 11:01:37 -0500
> > To: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
> > Subject: RDB2RDF by Revelytix
> > Resent-From: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
> > Resent-Date: Sun, 18 Jul 2010 16:02:11 +0000
> >
> > Hi Everybody,
> >
> > Hopefully everybody can read the following:
> >
> >
> http://tech.puredanger.com/2010/07/16/mapping-relational-data-to-the-semantic
> -
> > web
> >
> > <
> http://tech.puredanger.com/2010/07/16/mapping-relational-data-to-the-semantic
> > -web>I
> > would like to point out the following from the post:
> >
> > Due to these deficiencies, we have created our own mapping language. It
> > shares some of the ideas present in D2RQ, however it departs
> significantly
> > from D2RQ in the details. One major difference is that the Revelytix
> mapping
> > language depends on importing the database schema and building a source
> > ontology that represents the tables, columns, keys etc from that source.
> The
> > mapping ontology then references that source ontology.
> >
> > One major benefit of this strategy is that many of the ontology
> references
> > to columns and keys are done by pointing to a resource in the database
> > ontology rather than indicating that reference in text. This reduces the
> > chance of errors in the mapping, makes the mapping process easier in an
> > editor, and most importantly, exposes actual linkages from database to
> > domain. We can then write SPARQL queries against the mapping ontology
> that
> > provide answers about data lineage.
> >
> > Maybe we should invite them to give a presentation?
> >
> >
> > Juan Sequeda
> > +1-575-SEQ-UEDA
> > www.juansequeda.com
>
>
>