- From: Michael Hausenblas <michael.hausenblas@deri.org>
- Date: Mon, 30 Aug 2010 16:02:28 +0100
- To: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
All, Below the agenda for tomorrow's meeting. Cheers, Michael --------------------------------------------------------- AGENDA Teleconference W3C RDB2RDF Working Group telephone conference 2010-08-31 ---------------------------------------------------------- Tuesday, 31 August *16:00-17:00 UTC* Local time: http://www.timeanddate.com/worldclock/fixedtime.html?month=08&day=31&year=20 10&hour=16&min=00&sec=0 Bridge US: +1-617-761-6200 (Zakim) Conference code : 7322733# (spells "RDB2RDF") Duration : 60 minutes ------------------------------------------------------------------- IRC channel : #RDB2RDF on irc.w3.org:6665 W3C IRC Web Client : http://www.w3.org/2001/01/cgi-irc Zakim information : http://www.w3.org/2002/01/UsingZakim Zakim bridge monitor : http://www.w3.org/1998/12/bridge/Zakim.html Zakim IRC bot : http://www.w3.org/2001/12/zakim-irc-bot.html ------------------------------------------------------------------- Chair: Michael Scribe: Boris 1. Admin PROPOSAL: Accept the minutes of last meeting, see http://www.w3.org/2010/08/24-rdb2rdf-minutes.html 2. Revised proposal from Souri http://www.w3.org/2001/sw/rdb2rdf/wiki/An_XML_Schema_for_SQL-based_RDB2RDF_M apping_%28Revision_1%29 Souri's comment: Regarding Comment 2.5 (Lookup Table): How can we translate a SPARQL query with FILTER involving transformed values? Example: Consider the following SPARQL query involving a property, :transfProp, whose values are transformed, via a lookup table, into (-1) times the original value (e.g., 10 in an INTEGER column, i.e., "10"^^xsd:integer in RDF, is transformed into "-10"^^xsd:integer): SELECT ?x ?y WHERE {?x :transfProp ?v1 . ?y :transfProp ?v2 . FILTER (?v1 > ?v2)} How can SQL know, without having the lookup table somehow specified (in a CASE statement or something equivalent), how to evaluate the FILTER clause? 3. Test Cases Kick-off the discussion around test cases, see http://www.w3.org/2001/sw/rdb2rdf/test-cases/ Boris volunteered to be process owner re TC and will give some background on purpose and approach. 4. What are we going to do about the Default Mapping? Separate document? Who can start a document for discussion? Juan, Eric, Souri? 5. Discussion on next steps for SQL-based approach. Create FPWD? Who volunteers for editing this? 6. Syntax discussion See post from Richard and follow-ups on mailing list http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0038.html Options are: + custom syntax http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0055.html + RDF/Turtle http://www.w3.org/2001/sw/rdb2rdf/wiki/R2RML_in_Turtle + XML http://www.w3.org/2001/sw/rdb2rdf/wiki/Example_of_SQL-based_RDB2RDF_Mapping: _Revision_1 7. AOB -- 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
Received on Monday, 30 August 2010 15:03:03 UTC