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RDDL, namespace versioning

At 02:49 PM 5/3/01 +0100, Paul Spencer wrote:
>But now RDDL comes along and gives us something for the namespace to point
>to. This could result in a need to version namespaces so that we can point
>to different RDDL documents. But if we do this, what happens (as David
>Carlisle mentioned) to processing code that uses fully-qualified names (such
>as code that uses XPath expressions)?

If we use namespaces for versioning, should there be a separate RDDL 
document per version?

Or should there be a RDDL document containing information on multiple 
versions and some kind of identifier (an XPath? an ID used in the namespace 
URI?) that can identify which version applies to a given document?

Simon St.Laurent - Associate Editor, O'Reilly & Associates
XML Elements of Style / XML: A Primer, 2nd Ed.
XHTML: Migrating Toward XML
http://www.simonstl.com - XML essays and books