On 12/5/05, me@alternize.com <me@alternize.com> wrote:
> From: <operationsengineer1@yahoo.com>
> > the reason for doing this is that you eliminate
> > database dead space (people that don't have faxes
> > won't store a null in the db (i think it is null) and
> > the db won't have to manage the null values).
>
> correct me if i'm wrong, but i don't think having a completely normalized
> datastructure makes always sense. if one would need to query an employee and
> having all phone numbers & stuff in one single view, you'll end up having a
> huge amount of joins. this is bound to "cost" performance while the "win"
> (diskspace) is relatively small.
>
> - thomas
>
there are cases, but you still want to justify yourself the use of
denormalized data...
--
regards,
Jaime Casanova
(DBA: DataBase Aniquilator ;)
