- From: ashok malhotra <ashok.malhotra@oracle.com>
- Date: Mon, 16 Aug 2010 17:06:47 -0700
- To: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
AGENDA W3C RDB2RDF Working Group Teleconference 2010-08-17 ----------------------------------------------------------------- Tuesday, 17 August *16:00-17:00 UTC* Local time: http://www.timeanddate.com/worldclock/fixedtime.html?month=07&day=20&year=2010&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: Ashok 0. Scribe assignment 1. Admin PROPOSAL: Accept the minutes of last meeting, see http://www.w3.org/2010/08/10-rdb2rdf-minutes.html 2. Continue discussion on comments on SQL-based approach from Richard Cyganiak - http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0004.html - http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0006.html - http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0005.html 3. Revised proposal from Souri AGENDA W3C RDB2RDF Working Group Teleconference 2010-08-10 ----------------------------------------------------------------- Tuesday, 10 August *16:00-17:00 UTC* Local time: http://www.timeanddate.com/worldclock/fixedtime.html?month=07&day=20&year=2010&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: Ashok 0. Scribe assignment 1. Admin PROPOSAL: Accept the minutes of last meeting, see http://www.w3.org/2010/08/03-rdb2rdf-minutes.html 2. Conclude discussion of Richard's comments on SQL-based approach http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Aug/0004.html 3. Revised SQL-based proposal from Souri http://www.w3.org/2001/sw/rdb2rdf/wiki/An_XML_Schema_for_SQL-based_RDB2RDF_Mapping_%28Revision_1%29 http://www.w3.org/2001/sw/rdb2rdf/wiki/Example_of_SQL-based_RDB2RDF_Mapping:_Revision_1 Further, Souri says: I am still not sure about a few things, most importantly - 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? 4. Discussion on next steps for SQL-based approach. 5. AOB 4. Discussion on next steps for SQL-based approach. 5. AOB -- All the best, Ashok
Received on Tuesday, 17 August 2010 00:09:31 UTC