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   RE: [xml-dev] Newbie Schema Restriction Question

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At 2006-04-21 17:10 -0400, Schneider, John Adam      CAR wrote:
>This helps very much.  Thank you.  I really hate that this is a catch-22.  I
>can't do this because it is in a different namespace from the UBL standard
>namespace, and I can't do it in the same namespace as the UBL standard
>namespace because it violates NDR and customization guidelines.
>Any creative ideas?

Personally, I think the combination of the upcoming extension element 
in UBL that allows only non-UBL children, combined with two trading 
partners agreeing upon an extension vocabulary, combined with the use 
of NVDL[1] to validate the presence and validity of the use of the 
extension vocabulary within the extension element, will be the 
optimum solution.

But it will be only one of the ways the committee might offer to do 
extensions.  Documents are still being developed.

There are no extension methodologies documented for UBL 1.0.

But I'm excited about using it for UBL 2.0.  I plan to include a 
section on my proposed use of NVDL in an upcoming "Practical Use of 
UBL Artefacts" hands-on training class (not yet announced by the 
organizers so I can't yet identify when and where).  The syllabus is 
on our web site linked on the right under "Training schedule and 
course syllabi".

Good luck in your use of UBL!

. . . . . . . . . . Ken

[1] http://www.nvdl.org

p.s. As Joe mentioned, there is a UBL-Dev mail list, announced long 
ago by Jon Bosak on this XML-Dev list:


Please join it and share your ideas and your requirements ... it is a 
public venue watched by many UBL committee members for ideas and 
input to our work

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