What are schemata

Don Park donpark at quake.net
Mon Jun 1 01:31:04 BST 1998


>Hmm, this line of thought may be perpetuating what I see as one of
>the shortcomings of DTDs, namely that the DTD has to describe the
>whole document, i.e. a class of languages.  What about partial
>validation/constraints?  I think it's important that child-of-DTD
>support compond documents & partial validation.  So in the terms above,
>maybe these things define sets of elements and attributes, rather
>than whole documents. -Tim

Also, in the realm of persistant data streams (i.e. TV), there is no way for
DTD to be updated by inlining DTD.  I can not add new elements or change
containment rules once the stream has started without shutting down the
broadcast and restarting again.

I guess this sort of falls into the question of "is a document always
finite?".  A document that takes an entire day to process is practically
infinite in my opinion.

Don Park

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