Message text written by Eric van der Vlist
>
Yes. There is a difference, though between a schema language (especially
when it is used to validate documents) and a development language and I
think that most of the people see a XML schema as a kind of firewall
which will protect them from the unexpected -these "otherwise" facts-.
>>>>>>>>> I see it vastly different - it is a means to document the
structural layout of the well-formed content for a business interchange.
<<<
Foreign namespaces (and "open" schemas in general) are then seen as
potentially dangerous since it's like removing a part of the firewall
exposing the applications to more unexpected facts and requiring a
different design.
>>>>>>>> Avoid like the plague! Use an ebXML Registry instead!!
Among the RSS 1.0 Working Group, for instance, everyone agreed to accept
foreign namespaces elements, but the majority decided to accept them
only when the content model (simple/complex) was not changed showing
that the notion of open/close is relative ;=) ...
>>>>>>>> More validation of the registry centric approach here ; -)
DW.
