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RE: [xml-dev] Schematron: Categories of Usage?

Hi Roger

Universal Business Language is promoting use for enumeration checking
due to limitations in that area on extensibility by derivation in W3C XML
Schema (inability to extend an enumeration using substitution groups or
It covers restriction of an enumeration list too of course. The enumerations
are kept separate from the XSD schema files and validated using Schematron.

All the best

Stephen Green

>>> "Costello, Roger L." <costello@mitre.org> 22/01/07 13:15:08 >>>
Excellent!  Thanks Bryan.

Bryan has identified another way that Schematron may be used for
checking data in an XML instance document:

Algorithmic Checking: the validity of data in an XML instance document
is determined not by mere examination or comparison of the data, but
requires performing an algorithm on the data.

Here are the ways that Schematron is being used today:

1. Co-constraint checking
2. Existence checking
3. Algorithmic checking

Any others?


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