Re: Database normalization

Hi,

On 8/28/07, Andrew Sullivan <ajs(at)crankycanuck(dot)ca> wrote:
>
> On Tue, Aug 28, 2007 at 03:37:22PM +0100, Sebastian Ritter wrote:
> > Thanks for the information.
> >
> > Both tables would be exactly sames apart from the foreign key relation
> to
> > clients or services.
>
> Hmm. Are the services or clients tables different? A useful rule of
> thumb is that, to the extent you can sort things into "kinds of
> data", then you should have exactly one space for each one. (I hope
> that's clear.)

The table definition is exactly the same. The only difference is whether
the
row refers to a client or service.

> Another factor ive been considering is that one of the fields in this
> > table(s) definition(s) is free flowing text which could potentially
> become
> > very large. Should I take this in to
> > consideration when deciding whether to split the tables? In terms of
> > searching speed that is.
>
> I'd put it in its own table, probably, unless you're going to use it
> frequently.

Why would frequency of use change whether or not I use one or two tables?

Sebastian