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Re: Agenda for Aug 17 Telcon

From: Boris Villazón-Terrazas <boris.villazon@deri.org>
Date: Tue, 17 Aug 2010 12:26:27 +0100
Message-ID: <4C6A71E3.2090905@deri.org>
To: ashok.malhotra@oracle.com
CC: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
Dear all

Regrets for today.
I'll be available only from IRC.

Boris

ashok malhotra wrote:
> 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
Received on Tuesday, 17 August 2010 11:27:13 GMT

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