action: ask webont for input: version 2

• From: Brian McBride <bwm@hplb.hpl.hp.com>
• Date: Mon, 07 Oct 2002 07:49:50 +0100
• To: RDF Core <w3c-rdfcore-wg@w3.org>
• Message-Id: <5.1.0.14.0.20021007073933.02200260@0-mail-1.hpl.hp.com>

This version includes the b-node idiom and some minor clarifications.


Draft Question for Webont:

RDFCore are considering a number of ways of representing datatyped values 
in RDF graphs and RDF/XML.  We would like to know WEBONT's preference 
amongst the following options.  Please could you rank them in order of 
preference, and identify any which would be unacceptable.  Unacceptability 
is not a matter of taste; to label an option as unacceptable, a critical 
requirement that cannot be met must be identified.


Proposal A:

   <rdf:Description rdf:about="Jenny">
     <foo:age>10</foo:age>
   </rdf:Description>

The object of the age property denotes a string literal[*].

Proposal B:

   <rdf:Description rdf:about="Jenny">
     <foo:age>10</foo:age>
   </rdf:Description>
   <rdf:Description rdf:about="&foo;age>
     <rdfs:format rdf:resource="&xsdr;integer"/>
   </rdf:Description>

The object of an age property denotes a string literal [*] from the lexical 
space of xsd:integer.

Proposal C:

   <rdf:Description rdf:about="Jenny">
     <foo:age rdf:datatype="&xsdr;integer>10</foo:age>
   </rdf:Description>

The object of the age property denotes a member of the value space of 
xsd:integer.

Proposal D:

   <rdf:datatype rdf:property="&foo:age" rdf:datatype="&xsdr;decimal"/>
   <rdf:Description rdf:about="Jenny">
     <foo:age>10</foo:age>
   </rdf:Description>
   <rdf:Description rdf:about="Johnny">
     <foo:age>10</foo:age>
   </rdf:Description>

Proposal D is proposal C with some syntactic sugar (the rdf:datatype 
declaration) so that it is not necessary to put an rdf:datatype attribute 
on every use of the age property.

Proposal E:

   <rdf:Description rdf:about="Jenny">
     <foo:age xsdr:integer="10"/>
   </rdf:Description>

In n-triples this is equivalent to:

   <Jenny> <age> _:l .
   _:l <xsdr:integer> "10" .

The object of the age property denotes an integer from the value space of 
xsd:integer.

Proposal F:

   <rdf:Description rdf:about="Jenny">
     <foo:age>10</foo:age>
   </rdf:Description>
   <rdf:Description rdf:about="&foo;age>
     <rdfs:range rdf:resource="&xsdr;decimal"/>
   </rdf:Description>

The object of an age property denotes an integer from the value space of 
xsd:decimal.

[*] A string literal is an old style RDF literal which consists of a 
unicode string and language identifier.

Received on Monday, 7 October 2002 03:07:40 UTC