Re: [xml-dev] XRefs between instances using different content models

[David Carlisle <davidc@nag.co.uk>]

On 20/10/2010 15:39, Paul Eisenberg wrote:
> Is it generally possible to set XREFs between instances that rely on
> different
> DTD/XSD content models?

yes or no depending what you mean by "XREF". the two most common 
referencing mechinsms (probably) in xml would be using

ID and IDREF attributes, but they are constrained to be in the same 
document, you can not refer to other documents using IDREF typed 
attributes even if they use the same document type.

the other common referencing method is to use ID attributes for the 
anchor and then URI-valued attribute for the link. If you use URIs for 
referencing you can refer to the ID foo in document bar.xml as 
href="../../a/b/c/bar.xml#foo" and then it doesn't matter what the 
document type of the document is, it doesn't need to be xml at all, it 
may be html or pdf or whatever.

David


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