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   Re: [xml-dev] Notations for datatypes

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Uche Ogbuji wrote:

> Using notations for data types leaves them within the information layer defined
> strictly by XML 1.0, and thus means they are accessible to most generic XML
> processing tools, including the two most popular: DOM and SAX.  It would obviate
> the pernicious PSVI, and more objectively, remove the need for out-of-band
> mappings of XML information items to additional notations.

[much good sense snipped]

Amen. In my experience, a NOTATION-like local mapping is what specialized local
processes must do anyway. Classifying instances of incoming XML by their provenance
and structure, when no explicit NOTATION is available, and often even when it is, a
processing node must associate the processes which it is capable of
performing--including the specific data instantiations required--which each of the
sources of data against which it has been able successfully to execute any of those


Walter Perry


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