> 2. What are good reasons for having multiple schemas for the same
> instance?
It supports multi-stage (workflow) processing real well. The perimeter
gateway only needs to know that it's a SOAP message, the security
processor needs to know that somewhere in the SOAP header is a
WS-Security element, etc. I wrote about this in a bit more detail for
an O'Reilly column:
http://www.xml.com/pub/a/ws/2003/09/02/typeless.html
--
Rich Salz, Chief Security Architect
DataPower Technology http://www.datapower.com
XS40 XML Security Gateway http://www.datapower.com/products/xs40.html
XML Security Overview http://www.datapower.com/xmldev/xmlsecurity.html
