XML Schema features

I work professionally with XML Schemas and my task is to use Schemas to
access and exchange data from a database. The objects in the database
represent a tree structure and besides there are additional connections
(secondary connections) between objects. These connections can only be
represented (as I know) in Schemas with key and keyref. I implemented the
structure of the database with XML Spy which does not support key and keyref
yet (there is no editor supporting the complete Candidate Recommendation 23
October 2000 according my researches). So I am not sure if I my document is
alright.
I constructed a sample Schema document to illustrate my intensions. Is there
an alternative way for my purpose?

Best wishes,
Anne Frenzel


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Anne Frenzel


ISE GmbH
Bloherfelder Str. 129
D-26129 Oldenburg
E-Mail: frenzel@ise.de
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