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RE: [xml-dev] Re: determining ID-ness in XML

> -----Original Message-----
> From: Christopher R. Maden [mailto:crism@maden.org]
> Sent: 06 November 2001 05:42
> To: xml-dev@lists.xml.org
> Subject: RE: [xml-dev] Re: determining ID-ness in XML
> Not really.  Most applications that need references use them explicitly; 
> e.g., they do something like id(@idref) in an XPath.  In SGML, ID and 
> IDREF(S) were subject to the same case normalization rules, but since 
> that's gone in XML, it's not an issue any more.  A validator needs to 
> ensure that all IDREFs are valid, but we're only considering the case of 
> non-validating parsers.

I don't follow. I was simply suggesting that if we're providing the 
ability to declare unique identifiers outside of a DTD, then it seems 
reasonable to be able to declare cross-references as well.

The 'XML processor' will be checking uniqueness of the identifiers, so 
it'd be a snap to check that cross-references are correct as well.


Leigh Dodds, Research Group, Ingenta | "Pluralitas non est ponenda
http://weblogs.userland.com/eclectic |    sine necessitate"
http://www.xml.com/pub/xmldeviant    |     -- William of Ockham