- From: Richard Cyganiak <richard@cyganiak.de>
- Date: Sat, 16 Jun 2012 15:04:53 +0100
- To: W3C RDB2RDF <public-rdb2rdf-wg@w3.org>
We have an R2RML test case that asserts: An empty R2RML mapping is allowed, and generates an empty output dataset. http://www.w3.org/2001/sw/rdb2rdf/test-cases/#R2RMLTC0007g But the R2RML spec says: [[ An R2RML mapping defines a mapping from a relational database to RDF. It is a structure that consists of one or more triples maps. ]] http://www.w3.org/TR/r2rml/#dfn-r2rml-mapping The empty graph encodes zero triples maps, and thus is not an R2RML mapping according to this definition. That's a contradiction that needs to be fixed one way or the other. I don't have much of an opinion on which way we should go. Anyone else has an opinion? Best, Richard
Received on Saturday, 16 June 2012 14:05:35 UTC