XSD - new VALID schema

[Matthew Graham]

Hi,

Rob Seaman wrote:
> On Aug 10, 2006, at 9:36 AM, Tony Linde wrote:
>
>>> fact, there is no one single schema that is acceptable.  One
>>> shouldn't say "the VOEvent schema", but rather, "a VOEvent schema".
>>
>> I don't agree with that.
>
> Fine.  But "the official IVOA VOEvent v1.1 schema" is also just "a 
> VOEvent schema".  I'm happy to have the Pope and the Dalai Lama bless 
> some version, but that doesn't infallibly make it better than some 
> other schema.  A conforming document is conforming whether or not it 
> validates against even the blessed "schematic" representation of the 
> specification.
>
> Either the specification is law or the schema is law - you can't have 
> it both ways.  Schema == pragma.

Ideally we would have a VOEvent Data Model (described by the spec) and 
then the schema is just one valid instantiation of that data model: 
another could be a RelaxNG based description or a Schematron one.

    Cheers,

    Matthew