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Distributed foreign keys (was Re: Category Types)

From: Paul Vernon <paul.vernon_at_ukk.ibmm.comm>
Date: Wed, 18 Jun 2003 17:25:29 +0100
Message-ID: <bcq3u8$201s$1@gazette.almaden.ibm.com> 





"Alexey Kirich" <kirich_a_at_softline.kiev.ua> wrote in message
news:3ef01f21$1_at_ns...


[snip]


> This approach can be made with hope, that in the future RDBMSs will support

> OR like foreign constraints.




Hugh Darwen has a proposal for such "distributed foreign key" shorthands in
this presentation.



http://www.hughdarwen.freeola.com/TheThirdManifesto.web/Missing-info-without-nulls.pdf



Regards


Paul Vernon


Business Intelligence, IBM Global Services
Received on Wed Jun 18 2003 - 11:25:29 CDT












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