Re: Proposed Resolution for Issue 42

On 31 May 2011, at 19:02, ashok malhotra wrote:
> We discussed issue 42 on the telcon today but did not resolve it at neither Richard
> nor Enrico was on the call.
> 
> The WG seemed inclined to accept the proposal from Souri:
> -- maintain data equivalence (allowing converting either way, without loss of info) => this can be done by DM 1) always generating schema triples and 2) skipping generation of triples for NULL values

I would agree to a proposal that maintains reversibility of the mapping by adding rdfs:domain triples to the properties, and does not generate triples for NULL values.

Best,
Richard


> 
> We also discussed whether we needed to prove that a SPARQL query could be generated on the
> RDF that was equivalent to a SQL query on the Relational data.  The feeling was that, if there was no
> loss of information, then there would exist a SPARQL query that was equivalent to the SQL query.
> Alexandre pointed us to some work he had done on this.  See minutes. http://www.w3.org/2011/05/31-rdb2rdf-minutes.html
> 
> Richard, Enrico please reply to this mail and let the WG know if you can live with this proposal.
> We should close this issue next Tuesday.
> -- 
> All the best, Ashok
>

Received on Tuesday, 31 May 2011 18:29:55 UTC