Re: (EOM) entity logic
Re: (EOM) entity logic
- Subject: Re: (EOM) entity logic
- From: Arturo Pérez <email@hidden>
- Date: Mon, 22 Nov 2004 20:34:50 -0500
I'd like to emphasize certain points that Jerry made that most (I'd say
80-90%) developers overlook.
On Nov 22, 2004, at 5:18 PM, Jerry W. Walker wrote:
Basically, the more you intelligently de-normalize, the more efficient
your system will tend to be at the cost of maintainability.
...
Many developers seem to believe that denormalization gets one
performance at little to no cost. On the contrary, denormalization can
be _very_ expensive in terms of the amount of effort one needs to apply
in order to preserve data integrity. Codd, Date and others explain
this point very well.
My rule was only to denormalize when the DBA told me he ran out of
tuning tricks to increase performance. Offhand I can't remember any
time he did so. :-)
__ Jerry W. Walker, Partner
--arturo
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden