Try writing apps for cellphones and both space and time become 
important again!

----- Original Message ----- 
From: "Simon Slavin" <slav...@hearsay.demon.co.uk>
To: "General Discussion of SQLite Database" <sqlite-users@sqlite.org>
Sent: Monday, July 27, 2009 3:33 PM
Subject: Re: [sqlite] Denormalisation


>
> On 27 Jul 2009, at 10:44pm, CityDev wrote:
>
>> Over the intervening years I can't ever remember denormalising data
>> (even
>> when dealing with eg 13 million insurance customers in a table). Is
>> it OK
>> nowadays to say always aim to be fully normalised - modern RDBMSs 
>> are
>> usually powerful enough to cope with most anything?
>
> Performance/space/time/money payoff calculation.  The smallest 
> mundane
> laptop these days comes with a 120 Gig hard disk.  No real need to
> economise on file size, so if you need fast processing you might use
> lots of space.  On the other hand if you need to cart your entire
> dataset around on a USB Flash drive you might want to save space.
>
> The advantage is that most programmers don't have to care which way
> they go: they write the program any way it occurs to them.  The
> disadvantage of this is that when they hit the first job where the
> difference does matter, they don't know what to do about it.
>
> Simon.
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