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Re: [Graphs] Proposal: RDF Datasets

From: Andy Seaborne <andy.seaborne@epimorphics.com>
Date: Tue, 08 Mar 2011 18:43:51 +0000
Message-ID: <4D7678E7.4080903@epimorphics.com>
To: Richard Cyganiak <richard@cyganiak.de>
CC: public-rdf-wg@w3.org
"""
The same blank node cannot occur in two graphs at the same time.
"""

If there is knowledge it's the same blank node why not allow it to be 
the same?  As long as the nodes aren't accidentally equated.


As in the default-graph-as-union and the base+inference cases, there are 
uses for the subgraph relationship and then it is the same blank node.


For TriG and N-quads, I suggest blank node labels are scoped to the 
document, and across graphs.  It's confusing to see two _:a to mean 
different things without much stronger scoping intuitions (esp. 
N-Quads); it makes it possible to record when you do know they are the 
same bnode (one graph a subgraph of another).

	Andy
Received on Tuesday, 8 March 2011 19:02:40 UTC

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