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

• From: RDB2RDF Working Group Issue Tracker <sysbot+tracker@w3.org>
• Date: Mon, 07 Mar 2011 16:02:32 +0000
• To: public-rdb2rdf-wg@w3.org
• Message-Id: <E1PwctE-0003ee-Qw@barney.w3.org>

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"

Received on Monday, 7 March 2011 16:02:34 UTC