This Idea is supported very well in the Oxygen Product: there you have so
called "validation scenarios", which is essentially a combination of
Schemata. You could have one validation scenario for "work in progress"
documents, and another scenario for "final" documents, both for the same
namespace. I would think that both scenarios would share the same XSD
Schema, but would differ in a "weak" vs "strong" Schematron Schema. In the
Oxygen IDE, it’s the users choice which scenario should be applied.

Out tool for validation and assessment, which I have mentioned in the mail
from Jan. 4th, tries to implement this idea of different validation
scenarios as a java library. Since there is no user interaction, you need
some mechanism to find out which scenario shall be applied. This can be any
XPATH expression. In the example given , I would think of a @status flag.

Frank

-----Ursprüngliche Nachricht-----
Von: Michael Kay [mailto:mike@s...]
Gesendet: Samstag, 6. Januar 2018 10:13
An: bryan rasmussen <rasmussen.bryan@g...>
Cc: Costello, Roger L. <costello@m...>; xml-dev@l...
Betreff: Re: Need a language whiz: An XML Schema "specifies" how
data is to be structured? "describes"? "constrains"?

>

> Theoretically, although I have never seen it with XSD and would
> probably think it was a weird use of the language, you could have
> multiple schemas for validating documents in the same namespace.

I have seen one client who was attempting to do this: essentially applying
stricter validation to "finished" documents than to "work in progress". It
proved quite difficult to manage the maintenance of different versions of
the same schema; I think this is something that would benefit from better
support in languages and tools.

Michael Kay
Saxonica
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