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DTD/Schema level of validity

From: Karl Dubost <karl@w3.org>
Date: Fri, 28 Mar 2003 16:01:55 -0500
Message-Id: <a05200f03baaa66332c8e@[]>
To: www-qa@w3.org


Right now, we define the level of validity of a documents with 
regards to its DTD. For example, the Markup validator validates 
document against the DTD.

With the coming of new technologies, often a schema AND a DTD are developed.
The Schema being often more refined, more detailed than the DTD.

For validity:

	How do we define the validity of a document
	when a schema and a DTD for the same technology
	do not express the same constraints?

For Conformance:

	How do we explicit the rules for conformance?

When the values are defined in the spec, for example, their type, one 
can say that "the value MUST be..." because of the impossibility of 
the DTD to express the type of these values, One can say, the 
constraints on this attribute is defined by the Schema and you have a 
rule at the beginning which says "To conform, the [class_of_product] 
MUST respect the Schema..."

Karl Dubost / W3C - Conformance Manager

      --- Be Strict To Be Cool! ---
Received on Friday, 28 March 2003 23:27:23 UTC

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