W3C home > Mailing lists > Public > public-rdf-dawg-comments@w3.org > November 2005

Re: need extar information in SPARQL [OK?]

From: Dan Connolly <connolly@w3.org>
Date: Mon, 07 Nov 2005 13:09:58 -0600
To: Faisal.Alkhateeb@inrialpes.fr
Cc: public-rdf-dawg-comments@w3.org
Message-Id: <1131390598.7185.309.camel@dirk>

On Tue, 2005-10-25 at 18:31 +0100, Seaborne, Andy wrote:
> 
> 
> Faisal.Alkhateeb@inrialpes.fr wrote:
> > 
> > Hi everyone, 
> > 
> >       I am working in something that uses SPARQL, neverminde, so I read the 
> > SPARQL draft amd there are some points that I hope someone explain them to me. 

We're interested to know if you find the explanation below sufficient.

You might also consult mailing lists such as semantic-web@w3.org.

> >   I want to know how to construct the database because it is not clear as it 
> > contains default and named graphes? Do you have one database or many? when we 
> > have different databases, do I construct the merge? when we have different FROM 
> > and FROM NAMED we project the query in the merge of the databases or in each 
> > one at a time. How we construct the default and the named graphes and how we 
> > store them? 
> > 
> 
> The current SPARQL query language specification does not include any 
> fucntionality for loading RDF data into a persistent store.  You will need to 
> consult the documentation for the implementation you are using for how to do 
> that.  Many toolkits provide ways to load RDF data without needing to 
> understand the details of the persistent storage.
> 
> FROM and FROM NAMED describe the RDF dataset to be queried but don't enforce a 
> a fixed mechanism for creating or loading the graphs.
> 
> 	Andy
> 
-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
Received on Monday, 7 November 2005 19:10:04 GMT

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