Re: ISSUE-28 (equivalent blank nodes): Clarify whether blank nodes are equivalent based on their identifier [R2RML]

Created a basic test case for this:  http://www.w3.org/2001/sw/rdb2rdf/wiki/R2RML_Test_Cases_v1#DB26 

Alex

On 07/03/2011, at 17:02, RDB2RDF Working Group Issue Tracker wrote:

> 
> ISSUE-28 (equivalent blank nodes): Clarify whether blank nodes are equivalent based on their identifier [R2RML]
> 
> http://www.w3.org/2001/sw/rdb2rdf/track/issues/28
> 
> Raised by: David McNeil
> On product: R2RML
> 
> Clarify in the spec whether the blank nodes generated via different mappings and different logical rows, but in the same graph are to be considered equivalent based on having the same blank node identifier. Within the context of a single rr:graph do the following refer to the same blank node?
> 
> * in TriplesMap1, an rr:subject property whose value is a blank node with an identifier of "Department10"
> 
> * in TriplesMap2, an rr:template property (with an associated rr:termtype="BlankNode") that produces the value "Department10"
> 
> * in TriplesMap3, an rr:column property (with an associated rr:termtype="BlankNode") that points to a column from a SQLQuery that produces the value "Department10"
> 
> * in TriplesMap3, another logical row in the SQLQuery that produces the value of "Department10"
> 
> 
>