- From: Alex Miller <alexdmiller@yahoo.com>
- Date: Sun, 18 Jul 2010 12:15:47 -0700 (PDT)
- To: Michael Hausenblas <michael.hausenblas@deri.org>, Juan Sequeda <juanfederico@gmail.com>
- Cc: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
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
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<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:tahoma, 'new york', times, serif;font-size:10pt"><div>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?</div><div><br></div><div>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. :) </div><div><br></div><div>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. </div><div><br></div><div>Alex</div><div style="font-family:tahoma, new york, times, serif;font-size:10pt"><br><div style="font-family:arial, helvetica, sans-serif;font-size:10pt"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> Michael Hausenblas <michael.hausenblas@deri.org><br><b><span style="font-weight: bold;">To:</span></b> Juan Sequeda <juanfederico@gmail.com><br><b><span style="font-weight: bold;">Cc:</span></b> RDB2RDF WG <public-rdb2rdf-wg@w3.org><br><b><span style="font-weight: bold;">Sent:</span></b> Sun, July 18, 2010 11:07:56 AM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: RDB2RDF by Revelytix<br></font><br>
<br>> Maybe we should invite them to give a presentation?<br><br>Yup, good idea - done [1] (Alex and I follow each other on Twitter ...).<br><br>Cheers,<br> Michael<br><br><span>[1] <a target="_blank" href="http://twitter.com/mhausenblas/status/18848984267">http://twitter.com/mhausenblas/status/18848984267</a></span><br><br>-- <br>Dr. Michael Hausenblas<br>LiDRC - Linked Data Research Centre<br>DERI - Digital Enterprise Research Institute<br>NUIG - National University of Ireland, Galway<br>Ireland, Europe<br>Tel. +353 91 495730<br><span><a target="_blank" href="http://linkeddata.deri.ie/">http://linkeddata.deri.ie/</a></span><br><span><a target="_blank" href="http://sw-app.org/about.html">http://sw-app.org/about.html</a></span><br><br><br><br>> From: Juan Sequeda <<a ymailto="mailto:juanfederico@gmail.com" href="mailto:juanfederico@gmail.com">juanfederico@gmail.com</a>><br>> Date: Sun, 18 Jul 2010 11:01:37 -0500<br>>
To: RDB2RDF WG <<a ymailto="mailto:public-rdb2rdf-wg@w3.org" href="mailto:public-rdb2rdf-wg@w3.org">public-rdb2rdf-wg@w3.org</a>><br>> Subject: RDB2RDF by Revelytix<br>> Resent-From: RDB2RDF WG <<a ymailto="mailto:public-rdb2rdf-wg@w3.org" href="mailto:public-rdb2rdf-wg@w3.org">public-rdb2rdf-wg@w3.org</a>><br>> Resent-Date: Sun, 18 Jul 2010 16:02:11 +0000<br>> <br>> Hi Everybody,<br>> <br>> Hopefully everybody can read the following:<br>> <br><span>> <a target="_blank" href="http://tech.puredanger.com/2010/07/16/mapping-relational-data-to-the-semantic">http://tech.puredanger.com/2010/07/16/mapping-relational-data-to-the-semantic</a>-</span><br>> web<br>> <br><span>> <<a target="_blank" href="http://tech.puredanger.com/2010/07/16/mapping-relational-data-to-the-semantic">http://tech.puredanger.com/2010/07/16/mapping-relational-data-to-the-semantic</a></span><br>> -web>I<br>> would like to point
out the following from the post:<br>> <br>> Due to these deficiencies, we have created our own mapping language. It<br>> shares some of the ideas present in D2RQ, however it departs significantly<br>> from D2RQ in the details. One major difference is that the Revelytix mapping<br>> language depends on importing the database schema and building a source<br>> ontology that represents the tables, columns, keys etc from that source. The<br>> mapping ontology then references that source ontology.<br>> <br>> One major benefit of this strategy is that many of the ontology references<br>> to columns and keys are done by pointing to a resource in the database<br>> ontology rather than indicating that reference in text. This reduces the<br>> chance of errors in the mapping, makes the mapping process easier in an<br>> editor, and most importantly, exposes actual linkages from database to<br>> domain. We can then write
SPARQL queries against the mapping ontology that<br>> provide answers about data lineage.<br>> <br>> Maybe we should invite them to give a presentation?<br>> <br>> <br>> Juan Sequeda<br>> +1-575-SEQ-UEDA<br>> <a target="_blank" href="http://www.juansequeda.com">www.juansequeda.com</a><br><br><br></div></div><div style="position:fixed"></div>
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Received on Monday, 19 July 2010 07:42:28 UTC