Re: [xml-dev] Will XML Schema 1.1 get traction?

[Michael Kay <mike@saxonica.com>]

>
> They won't be able to do that if XSD 1.1 is used to express 
> enumerations and other value constraints that are fluid for users.
>
> Whether XSD 1.1 is needed otherwise for structural and lexical 
> constraints remains to be seen
This discussion about the need to keep different parts of a schema 
separate so that the different parts can be under different change 
control is fascinating (and challenging), but I think it's of marginal 
relevance to the question of XSD 1.1 uptake. After all, the canonical 
example of a validation feature that needs to be relatively flexible is 
code lists, and that's entirely within the scope of XSD 1.0. I don't 
think there's any evidence that the new validation features introduced 
by XSD 1.1 tend to correspond to rules that change more frequently than 
the rules that are within the scope of XSD 1.0.

Michael Kay
Saxonica