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RE: W3C acknowledges RDQL submission from HP

From: Seaborne, Andy <Andy_Seaborne@hplb.hpl.hp.com>
Date: Mon, 19 Jan 2004 11:18:01 -0000
Message-ID: <E864E95CB35C1C46B72FEA0626A2E808712F6C@0-mail-br1.hpl.hp.com>
To: www-rdf-rules@w3.org
Cc: "'Ashok Malhotra'" <ashokma@microsoft.com>

> How does RDQL handle reified properties?  Nested sub-queries?

There is no explicit syntactic support in RDQL for reification - it just
relies on the fact reification statings are encoded in RDF.  There has a
suggestion using a 4-tuple {x, s, p ,o} to be a shorthand for writing out 

(?x rdf:type rdf:Statement)
(?x rdf:subject ?s)
(?x rdf:predicate ?p)
(?x rdf:object ?o)

As and when and if the working groupd starts up, use cases (descriptions of
use in an application example) on things like reification will be very
helpful.

	Andy

-------- Original Message --------
> From: Ashok Malhotra <mailto:ashokma@microsoft.com>
> Date: 16 January 2004 22:59
> 
> How does RDQL handle reified properties?  Nested sub-queries?
> All the best, Ashok
Received on Monday, 19 January 2004 06:19:31 UTC

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