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RE: schema arrangement or architecture

From: Michael Kay <mike@saxonica.com>
Date: Tue, 3 Jun 2008 09:00:22 +0100
To: "'Boris Kolpackov'" <boris@codesynthesis.com>, "'Andrew Welch'" <andrew.j.welch@gmail.com>
Cc: <xmlschema-dev@w3.org>
Message-ID: <AC34518708BF4749B815BE3B832B1941@Sealion>

> My ideal schema has all its types defined globally (e.g., no
> anonymous types), and all its elements and attributes --
> locally, except for the elements that are valid document roots.

XQuery currently allows you to validate against a global element declaration
but not against a type. With schema-aware XSLT and XQuery you may often want
to validate document fragments. So I'm in favour of using global element
declarations almost everywhere. By contrast, I don't think an anonymous type
does much harm, because it's a completely undisruptive change to promote it
subsequently to a named type. I tend to make all my simple types global,
because they are very often reused, but I often keep complex types local.

Michael Kay
Received on Tuesday, 3 June 2008 08:01:04 UTC

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