The mapping language MUST define the set of relational algebra to be supported from Enrico Franconi on 2011-06-21 (public-rdb2rdf-wg@w3.org from June 2011)

From: Enrico Franconi <franconi@inf.unibz.it>
Date: Tue, 21 Jun 2011 10:59:19 +0200
To: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
Message-Id: <5762CA03-5C22-4E02-BFF8-76059C8AFC91@inf.unibz.it>

Folks, I reread the charter today, and the first two bullets are:

• The mapping language MUST define the mapping of relational data and relational schemas to RDF and OWL.

• The mapping language MUST define the set of relational algebra to be supported in the first release. This set to be supported SHOULD be as complete as possible and be defined as soon as possible after the WG official launch.

How does the latter "MUST" relate to our discussion on NULL values? Can we map relational data with NULL values and at the same time can we not provide support on how to properly access this data in RDF?
--e.

Received on Tuesday, 21 June 2011 08:59:48 UTC