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Re: Scope of blank nodes in TriG?

From: Richard Cyganiak <richard@cyganiak.de>
Date: Mon, 17 Oct 2011 15:15:24 +0100
Cc: public-rdf-wg@w3.org
Message-Id: <E4684BCD-C929-4219-A27D-735E2E140924@cyganiak.de>
To: Jeremy Carroll <jeremy@topquadrant.com>
On 14 Oct 2011, at 22:38, Jeremy Carroll wrote:
> RDF is a framework for describing resources.
> If I use the same blank node in two graphs, how is the description of the resources modified?
> 
> i.e. what is the semantic difference?

As long as each graph is considered in isolation it doesn't matter.

If you consider the union of the two graphs, it will obviously be different if a blank node is shared.

This is very important for SPARQL stores that place the union of all graphs into the default graph.

Best,
Richard
Received on Monday, 17 October 2011 14:15:56 GMT

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