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Re: RDF storage

• To: Michael Champion <mc@x...>
• Subject: Re: RDF storage
• From: "Chiusano Joseph" <chiusano_joseph@b...>
• Date: Mon, 17 May 2004 13:42:53 -0400
• Cc: Xml-dev <xml-dev@l...>
• Organization: Booz Allen Hamilton
• References: <D8733C86-A828-11D8-AD46-000A95CCC59E@x...>

Michael Champion wrote:
> 
> On May 17, 2004, at 12:49 PM, John Song wrote:
> 
> >
> >   It seems that the most appealing thing to store RDF in NXD is that i
> > can utilize the index and other optimizing techniques  to  query
> > it,but i am no very sure about that.Could anybody give me some
> > advice?thanks.
> >
> 
> My understanding is that the standardized XML serialization of RDF is
> not terribly interesting to query using XPath or XQuery because a) the
> numerous different ways one can serialize the same RDF model, and b)
> most of the interesting aspects of a query on RDF have to do with the
> inferences one can get from traversing the RDF graph, not from the
> nodes in isolation.

Adding to Mike's information in (a) above: The recently charted W3C RDF
Data Access Working Group ("DAWG"[1]) is tackling this very problem by
defining a standard query language for RDF-formatted data.

Kind Regards,
Joe Chiusano
Booz | Allen | Hamilton
Strategy and Technology Consultants to the World

[1] http://www.w3.org/2003/12/swa/dawg-charter 

> Jonathan Robie's "The Syntactic Web" piece
> http://www.idealliance.org/papers/xml2001/papers/html/03-01-04.html
> addresses the first point by suggesting that normalized RDF be stored
> and queried, but I don't know how receptive the RDF world has been to
> it.  If Jonathan is still on this list, he may be able to follow up.
> 
> The current work I know about by Tamino customers tends to involve the
> combination of an RDF or OWL reasoner with the NXD.  There are
> synergies there -- Huge ontologies don't fit efficiently into memory so
> DB support is helpful, and the XML queries only give the first cut of
> results, and an inferencer is needed to take them further.
> 
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-- 
Kind Regards,
Joseph Chiusano
Associate
Booz | Allen | Hamilton

• References:
  • Re: RDF storage
    • From: Michael Champion <mc@x...>

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