Re: Identifying candidate keys and primary keys

"rpost" <rpost_at_pcwin518.campus.tue.nl> wrote in message news:9bf14$48063060$839b4533$12580_at_news1.tudelft.nl...
> Brian Selzer wrote:
>
>>Unless you can identify the functional dependencies, you won't be able to
>>identify the candidate keys. If you don't know enough about the subject
>>matter (or weren't provided with that information as part of the
>>assignment), then you might as well join Bluto.
>
> Perhaps they want the student to write these assumptions down explicitly.
> Perhaps they want to make the student realize that without such explicit
> assumptions the validity of the model cannot be determined.
>

Speculating about assumptions seems too much like work to me. It's bad enough having clients who don't know what they want--just that they want it NOW! Maybe this assignment is designed to expose students to what they can expect when they graduate--sort of a 'weed out the feint hearted' exercise.

Brian Received on Thu Apr 17 2008 - 07:05:35 CEST