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Ie
the DSML language itself should be able to be so expressed
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DTDs
have limited capability to express certain things such as
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cant
say that an attribute must be either a string or two or more
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value
tags. Eg. Cant precisely express rules for a credit card
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number.
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XML
schema should be provided as a bare minimum
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There
are many DTD-oriented XML tools, some recently that
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work
on schema.
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Desirable
to have a DTD but
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MS
draft uses a schema
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Leave
as open issue.
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Do as
schema first then consider making DTD (but leave
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schema
as the normative version)
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