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Re: poll: a graph is a set of statements

From: Alberto Reggiori <alberto.reggiori@jrc.it>
Date: Fri, 15 Dec 2000 16:43:00 +0100
Message-ID: <3A3A3C04.45494989@jrc.it>
To: "McBride, Brian" <bwm@hplb.hpl.hp.com>
CC: "RDF Interest (E-mail)" <www-rdf-interest@w3.org>
Hello

> Which implementations implement graphs (aka models)
> as sets of statements (i.e. a graph may contain a
> statement only once) and which implement graphs as
> bags (i.e. a graph may contain a statement more
> than once).

RDFStore implements graphs/models as a mathematical set of
statements. It associates a unique key to each statement by using a
Skolem function
carried out from the subject, predicate and object [1] (see URI
generation for triples).
Statements and model can be targeted by other statements [2]


Yours

Alberto

[1] http://nestroy.wi-inf.uni-essen.de/rdf/sum_rdf_api/#K31
[2]
http://lists.w3.org/Archives/Public/www-rdf-interest/2000Oct/0180.html
Received on Friday, 15 December 2000 10:46:22 GMT

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