Re: foreign key constraint versus referential integrity constraint

From: paul c <>
Date: Thu, 22 Oct 2009 17:22:01 GMT
Message-ID: <Zw0Em.48972$Db2.14580_at_edtnps83>

Sampo Syreeni wrote:
> ... What we'd nowadays
> call "complex", "semistructured", "unstructured", "unconventional" or
> even "nasty" data was explicitly excluded by Codd from the very
> beginning.
> ...

He was dealing with structured data all along. What he excluded was two things i) unnecessary structure, ii) hidden structure. Received on Thu Oct 22 2009 - 19:22:01 CEST

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