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XQuery/XPath Formal Semantics - smatch?

From: "Bob Foster" <bob@------.--->
To: <xml-dev@-----.---.--->
Date: 5/12/2003 10:51:00 PM
Section 7.7 outlines three main judgements: smatch, erase and annotate.
Erase and annotate are described, but smatch seems to be missing. This makes
it a little hard to understand.

Can someone either point out a document where this is defined (or a place in
this document), or answer what are probably the two key questions for
understanding it, namely,

- How does structural matching deal with non-determinism?
- Specifically, is structural matching "shallow" (like DTD or XML Schema,
where only the content model/complex type at a single level is examined to
resolve a choice) or "deep" (multiple levels are examined).

Bob

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