I agree, but I always include in any definition that semantic
interoperability must be maintained as well. So even though the schema
may still validate the data, it has to pass further compliance
constraints outside of the validation. I would also add that Schematron
will run into the same issue as well..particularly if the meaning of
elements and attributes change.
> Accordingly, I am raising caution to the common fallacy: "If my XML
> Schema is backward-compatible then my application can process old
> instance documents."
>
> Do you agree?
>
