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Re: Notes on updates to RDF Schema

From: Dan Brickley <danbri@w3.org>
Date: Tue, 29 Oct 2002 04:15:20 -0500 (EST)
To: Brian McBride <bwm@hplb.hpl.hp.com>
cc: RDF Core <w3c-rdfcore-wg@w3.org>
Message-ID: <Pine.LNX.4.30.0210290411510.16411-100000@tux.w3.org>

Cheers Brian. All I need now is to buy a license to OMNIGraffle and borrow
a friend's Mac to tweak the figures and we're away :)

re below, s/rdf:Literal/rdfs:Literal/, if I remember right. Which we now
say is a member of rdfs:Datatype I guess?


On Tue, 29 Oct 2002, Brian McBride wrote:

> I've prepared the attached as some briefing notes to help Danbri do the
> update to schema.  Please feel free to correct bits that you think are
> wrong or add bits that are missing.
> Datatypes
> =========
> o Define rdfs:Datatype the class of all datatypes.
> o rdfs:Datatype is a subclass of rdfs:Class, i.e. datatypes are classes
> o The class extension of a datatype class is the value space of the class.
> o a range constraint on a property can take a datatype as its value
> o rdfs:XMLLiteral is a member of rdfs:Datatype
> o rdfs:XMLLiteral is a subClass of rdf:Literal
> o some discussion of notion of a datatype inconsistency - lex form does not
> come from lex space or range constraints with disjoint value spaces
> Collections
> ===========
> o Define terms rdf:List a class
>                 rdf:first a property
>                 rdf:rest a property
>                 rdf:nil  a resource
> o rdf:rest has a range of rdf:List
Received on Tuesday, 29 October 2002 04:15:24 UTC

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