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Re: Enumeration in RDF?

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Tue, 16 Sep 2003 08:19:09 +0000
To: www-rdf-interest@w3.org, "ext" <Art.Barstow@nokia.com>, Patrick Stickle r <patrick.stickler@nokia.com>
Message-ID: <xxTZJ2RWrzSq.CWrDlQpr@mail.nokia.com>

"Generic" bags cannot be (usefully) constrained
without introducing global chaos.

The normative specs do not (I recall) address this, though 
constraints on bag members has been discussed,
and the approach that seemed to have very broad 
support is to

1. Create a special class X that is a subclass of rdf:Bag
2. Create a property Y that is a subproperty of rdf:li
   (or was that rdf:member, I'll have to check) and has
   a domain of X
3. Constrain property Y as needed (range, cardinality, etc)

I recall plans to cover this somewhere in a non-normative
part of the primer, but am not sure if it got added. 

I'll check once I'm back online with something bigger
than my communicator...

Patrick


_____________Original message ____________
Subject:	Enumeration in RDF?
Sender:	ext  <Art.Barstow@nokia.com>
Date:		Tue, 16 Sep 2003 08:07:54 +0000


Do the latest RDF specs define a way to do enumeration
(e.g. a Bag may contain only 4 strings)?  If so, please
send me the pointer.
Received on Tuesday, 16 September 2003 01:19:15 GMT

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