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   Extract A Subset of a W3C XML Schema?

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I have been asked what tools can extract a part of a schema.  The overall
schema is large, complex, and imports five or six other schemas into several
target namespaces.  The individual involved wants to create a smaller subset
that contains everything that one project needs, for the purposes of
instruction and training.

The problem is how to get all the necessary pieces so that nothing is left
out that is required for the schema to work.  XML Spy can be helpful with
its graphics, but there is no link from the graphics view to the text view,
so it is hard to find the pictured piece of the XML for copying.   You can
do some degree of copying and pasting the graphics view blocks between
schemas, but of course you have to keep track yourself of the bits you have
already transferred.  Also it is hard to be sure you have gotten everything
you need.

Does anyone know of such a tool?  If not, any suggestions based on actual
experience in doing this kind of task?  It seems to me that finding all the
dependencies within the schema and its imports would be the hardest part.

Cheers,

Tom P






 

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