Transcription: Personally, I have a real problem with the term validity when it comes to XML documents. Reason being, I come from a very strong database background where data validity came down to data integrity, being able to provide rules and stipulate limitations on data. Now that doesn't mean you can't do that in XML. You've seen that already. We've been able to specify some base data types and attributes and be able to have tokenized attributes and enumerated attributes and things like this, but it just doesn't have the strict rules that you can apply to a database. So when you talk about validity in XM ...
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