Hello,
 
We are developing an 
application which is based on a complex set of XML schemas (several dozen 
schemas in all).  The schemas themselves are based on the ISO19139 
standard, with a few extensions and changes for our purposes.  Some of the 
changes are done using xs:redefine.  The set of schemas validates perfectly 
using oXygen version 8 and the Xerces engine.  The application is developed 
using Visual Studio on the .NET 2.0 platform.  The problem is, when I try 
to load the root schema into a .NET XMLSchemaSet object and call the Compile 
method, it throws about 16 validation exceptions.  Some describe duplicate 
definitions of elements or types, some complain about invalid xs:redefine 
usage.  It has thrown us a bit that oXygen does not report anything, but 
.NET will not accept these schemas.  Even if I try to load the unmodified 
ISO19139 schema set, .NET reports 3 errors which again, oXygen does 
not.
 
Anybody know what is 
going on here?  Is .NET more stringent in its validation than oXygen?  
Even if we ask oXygen to use the MSXML.NET engine to validate them, we get 
different results.  It's difficult to post any of the schema info, because 
there is a total of well over a megabyte of it.  Initially we'd just 
like to know if anyone has come up against this sort of problem, and more 
important, has found a way through it.
 
Thanks and 
regards
Steve 
Marshall
 


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