Re: functional dependencies tht do not hold
From: Jan Hidders <jan.hidders_at_REMOVETHIS.pandora.be>
Date: Wed, 01 Jun 2005 20:23:03 GMT
Message-ID: <HOone.107751$KB2.6392930_at_phobos.telenet-ops.be>
Date: Wed, 01 Jun 2005 20:23:03 GMT
Message-ID: <HOone.107751$KB2.6392930_at_phobos.telenet-ops.be>
Nabil wrote:
> hey,
> i have been studying databases for a while now . There exist some
> cases where it is usefull to store even those FD's that do not hold.
> Ofcourse we save these as not holding and do not use them while
> normalizing. Does ne1 know when it is helpfull to store fd's that do
> not hold??
Sure, but this sounds a bit like a home-work problem, so could you tell a bit more about why you want to know this?
- Jan Hidders