Re: Associating schema with document

[Murata Makoto <mura034@attglobal.net>]

James Clark wrote:

> 
> I've been thinking about a catalog-based approach, and I think that would be
> more powerful than a PI although significantly more complicated.   The
> catalog could contain rules like:

Even if it is more complicated, it is a long-term solution.  It allows the recipient 
not to use the schema of the sender.  It allows schema evolution without rewriting 
documents and without in-place update of schemas.

I am against PIs or attributes, since they make a long-term solution more difficult.  
If we introduce PIs and implementations start to rely on them, it will become harder 
to introduce a catalog-based approach.

Cheers,

Makoto