> The word "valid" is used in various ways, but the XML spec use it to
> mean valid with respect to the DTD referred to in the document.  If it
> doesn't refer to a DTD, it's invalid.

There are arguably multiple states: Not validated (well-formed only, not 
tested), invalid (DTD validation attempted and failed), valid (DTD 
validation attempted and succeeded), schema-invalid and schema-valid. 
(The latter two are distinguished only in the Post-Schema-Validation 
infoset, not in the basic infoset.)

As far as I can tell, the basic XML Infoset doesn't actually included 
any indication of these states as part of its information content. There 
are pieces of information which are only available when a document is 
valid, or when it was at least processed with a validating parser, but 
that's the closest I can find. Apparently detecting validation success 
or failure was left to whatever mechanism you use to invoke the parser 
and/or validator.


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() ASCII Ribbon Campaign  | Joe Kesselman
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