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   Re: Namespaces and DTDs

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  • From: james anderson <James.Anderson@mecomnet.de>
  • To: "xml-dev@ic.ac.uk" <xml-dev@ic.ac.uk>
  • Date: Wed, 10 Mar 1999 11:49:51 +0100

That "REC-xml-names-19990114" does not provide any means to establish
prefix<->uri bindings for a DTD has long been a point of contention. A cursory
search of the archives will bear this out. The decision to eliminate the
combined prefix/uri/dtd binding (the original pi form) was, however, correct,
as the pi form, at least as proposed in "WD-xml-names-19980327", would not
have been sufficient to handle such things as a dtd which needs multiple
prefix bindings or the situation where a given prefix<->uri binding is to
apply to multiple schema sources.

While it is true that some mechanism is necessary, a form - as discussed below
- which effected a singular binding would also not have solved the problem.
"Everyone" would seem to be waiting for "schemas"....

Marc.McDonald@Design-Intelligence.com wrote:
> A simple extension to namespaces could have fixed this problem:
> 1.      Allow a DTD to be optionally specified along with the namespace
> prefix and URI
> 2.      When an element is prefixed, parse it using the DTD associated with
> the namespace and the given prefix as the default.
> 3.      If no DTD is associated with the prefix or not validating, do what
> is done now (ensure element is well-formed).

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