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Eric van der Vlist wrote: > Dylan Walsh wrote: >> Aside from the fact that only global elements have global scope, >> what are the operations that are only achievable on global >> elements? I've taken a quick look at the structures recommendation >> and the primer, and I have not found a list of these. The primer >> does mention limitations of global elements, that they cannot >> contain references or have cardinality constraints. > > No, I was thinking about the global scope and its consequences. > > You can't reference local elements and that means for instance that you > can't include or import local elements into others schemas. > > This has also an impact on your design style since you might be > using global complex types and element groups to workaround this and > I am not sure everyone is aware of this issue ;=) ... Another place where this impacts is on substitution groups - the head of a substitution group has to be a global element (otherwise the other elements can't refer to it). Also, as far as I can work out, in most cases the members of the substitution group will be global as well (the exception being if you're using the head element within a type that you later restrict by substituting the head element for the more specialised element). Cheers, Jeni --- Jeni Tennison http://www.jenitennison.com/
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