- From: Michael Hausenblas <michael.hausenblas@deri.org>
- Date: Sun, 18 Jul 2010 17:07:56 +0100
- To: Juan Sequeda <juanfederico@gmail.com>
- CC: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
> 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
Received on Sunday, 18 July 2010 16:08:48 UTC