W3C home > Mailing lists > Public > www-rdf-comments@w3.org > April to June 1999

RE: RDF Question: about syntax of rdf container objects (Bag, Alt, Seq)

From: Jeffrey E. Sussna <jes@kuantech.com>
Date: Thu, 8 Apr 1999 04:51:06 -0700
To: "'Roger L. Costello'" <costello@mitre.org>, <xml-dev@ic.ac.uk>
Cc: <www-rdf-comments@w3.org>
Message-ID: <000201be81b6$166807a0$0200a8c0@kuantech1>
No. RDF defines alternative syntax for particular abstract models. You may
use whichever syntax you like. The examples you included are equivalent.
This is part of both the flexibility and seeming difficulty at first glance
of RDF. You can express a particular abstract model multiple ways in XML. It
is important and helpful to remember that RDF is not XML. The RDF spec just
happens to specify how to concretely represent RDF in XML.

Jeff

> -----Original Message-----
> From: owner-xml-dev@ic.ac.uk
> [mailto:owner-xml-dev@ic.ac.uk]On Behalf Of
> Roger L. Costello
> Sent: Thursday, April 08, 1999 4:43 AM
> To: xml-dev@ic.ac.uk
> Cc: www-rdf-comments@w3.org; costello@mitre.org
> Subject: Re: RDF Question: about syntax of rdf container objects (Bag,
> Alt, Seq)
>
>
> Dan Brickley wrote:
> >
> > Having an rdf:type property pointing to rdf:Bag is just RDF's way of
> > telling us that the anonymous resource "is A" rdf:Bag.
> >
>
> Is it *always* the case that if an RDF model has a resource with a
> property rdf:type whose value is foo then rather than:
>
> <rdf:Description [attrs]>
>     <rdf:type resoure="foo">
>     [other properties]
> </rdf:Description>
>
> the syntax is:
>
> <foo>
>    [other properties]
> </foo>
>
> Example:
>
> Rather than:
>
> <rdf:Description >
>     <rdf:type resoure="rdf:Bag">
>     [other properties]
> </rdf:Description>
>
> the syntax is:
>
> <rdf:Bag>
>    [other properties]
> </rdf:Bag>
>
> /Roger
>
>
> xml-dev: A list for W3C XML Developers. To post,
mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN
981-02-3594-1
To (un)subscribe, mailto:majordomo@ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@ic.ac.uk the following
message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)
Received on Thursday, 8 April 1999 07:51:41 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Friday, 21 September 2012 14:16:26 GMT