W3C home > Mailing lists > Public > www-tag@w3.org > January 2003

RE: Rationalizing the term URI

From: Dare Obasanjo <dareo@microsoft.com>
Date: Thu, 23 Jan 2003 16:22:12 -0800
Message-ID: <B885BEDCB3664E4AB1C72F1D85CB29F804B7C840@RED-MSG-10.redmond.corp.microsoft.com>
To: "Norman Walsh" <Norman.Walsh@Sun.COM>, <www-tag@w3.org>

<pedantry>
Whether a QName is a {URI, localname} pair depends on what W3C
recommendation you are reading. The Namespaces in XML REC considers it
to be a {prefix, localname} pair while the W3C XML Schema Datatypes
recommendation created a type [without a canonical form] called xs:QName
which is lexically a {prefix, localname} pair but logically a {URI,
localname} pair. 
</pedantry>

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PITHY WORDS OF WISDOM 
In any calculation, any error which can creep in will do so.


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>  
>  
> -----Original Message-----
> From: Norman Walsh [mailto:Norman.Walsh@Sun.COM] 
> Sent: Thursday, January 23, 2003 8:08 AM
> To: www-tag@w3.org
> 
> 
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> 
> / "Tim Berners-Lee" <timbl@w3.org> was heard to say:
> | URI reference - a string used in a language to specify a URI, for 
> | which relative form may be used where a base exists. ((This 
> is not the 
> | only way of specifying the value of a URI - one can use various 
> | character sets, namespace prefixes, etc))
> 
> Until the TAG solves rdfmsQnameUriMapping-6, I'd want to be 
> very careful in what we say about namespace prefixes 
> specifying URI references.
> 
> Namespace prefixes are part of a syntactic device for 
> constructing a QName which is a (URI, local-name) tuple, but 
> they aren't URIs.
> 
>                                         Be seeing you,
>                                           norm
> 
> - -- 
> Norman.Walsh@Sun.COM    | Truth lies within a little 
> uncertain compass,
> XML Standards Architect | but error is immense.
> Web Tech. and Standards |
> Sun Microsystems, Inc.  |
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Received on Thursday, 23 January 2003 19:22:44 GMT

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