Re: Although no external representation of schemas is required ... What is an "external" representation?

> They can.  As a convenience a processor can build-in the schema 
> components of a given namespace such that the user need not have to 
> supply an external expression of those schema components.
>
> I don't know any that do
Saxon's schema processor has built-in knowledge of the components of the 
schemata for the XML and XSI namespaces.

Michael Kay
Saxonica