From: Dan Clemmensen (dgc@cox.rr.com)
Date: Sat Oct 20 2001 - 09:17:32 MDT
Robert Coyote wrote:
> Sounds like we need some kind of Meta DTD
XML 1.0 was a great idea, but it had one failing:
you specify an XML document type using a different
language called DTD. SO, DTD is sort of the meta XML
for release 1.0
A new standard now corrects this problem: This standard
uses schemas instead of DTDs. A schema is a well-formed
XML document that describes an XML document type. The
schema for a schema is well-formed XML .documet, and
is thus a meta-schema. Therefore, you could in theory
define a meta-meta-schema.
You cannot really understand recursion until you understand
recursion :-)
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