W3C home > Mailing lists > Public > public-rdb2rdf-wg@w3.org > July 2012

Couple of changes needed in R2RML namespace doc

From: Richard Cyganiak <richard@cyganiak.de>
Date: Fri, 13 Jul 2012 18:43:01 +0100
Message-Id: <1167D654-37A6-4DC3-BDB9-35D5C4B2C64B@cyganiak.de>
Cc: Public-Rdb2rdf-Wg RDB2RDF <public-rdb2rdf-wg@w3.org>
To: Boris Villazón-Terrazas <bvillazon@fi.upm.es>
Hi Boris,

A few changes are needed in the R2RML namespace document.

http://www.w3.org/ns/r2rml

The vocabulary has a property rr:refObjectMap which doesn't exist in the language any more.

The range of rr:objectMap should be the union of rr:ObjectMap and rr:RefObjectMap.

The new class rr:TermMap needs to be added. It is a superclass of rr:SubjectMap, rr:PredicateMap, rr:ObjectMap and rr:GraphMap. Suggested additional triples:

rr:TermMap rdfs:label "Term Map"@en.
rr:TermMap rdfs:comment "A function that generates an RDF term from a logical table row."@en.

I think the current RDFS document can be simplified a bit by using rr:TermMap in a few places where currently the union of the four subclasses is used.

Thanks and all the best,
Richard
Received on Friday, 13 July 2012 17:43:29 UTC

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