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Subject: Re: Alternative approach for key/keyref
> concerned. Am I right in thinking there are other consistency issues apart > from datatypes? Another concern about the consistency is the uniqueness. That is, given a RELAX NG pattern P and a path expression E, it is desirable to have an algorithm that ensures there is at most one node that can possibly match E. For example, "/foo/bar" is unique with the following pattern: <element name="foo"> <element name="bar"> <data type="integer"/> </element> </element> But it is not unique with the following pattern: <element name="foo"> <zeroOrMore> <element name="bar"> <data type="integer"/> </element> </zeroOrMore> </element> This algorithm is another challenge, I guess. regards, -- Kohsuke KAWAGUCHI +1 650 786 0721 Sun Microsystems kohsuke.kawaguchi@sun.com
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