Re: Help me plaese
Date: Wed, 27 Sep 2000 10:04:26 -0400
Message-ID: <8qsupa$ekd$1_at_bob.news.rcn.net>
I suspect that your professor is assuming that you will do the work yourself. If you do this work, you will most lilkely learn and understand the concepts he/she is trying to teach you. Once you get your degree, no one will ask what grade you got in Database I class- they will ask you questions that call on you to interpret what you have learned in that class. In the long run, it will serve you far better to figure it out yourself. Best of luck to you.
ec_at_foi.hr> wrote in message
news:ccv1ts8o203feois4uis65n94lg7m31jv0_at_4ax.com...
> Hi people :-)
> I need some help on proofing some theorems.
> I need those proofs.
>
> Theorem 1. 4NF implies BCNF. (If relational scheme is in 4NF, then it
> is also in BCNF.)
> Theorem 2. PJNF(5NF) implies 4NF. (If relational scheme is in PJNF,
> then it is also in 4NF.)
> Lemma 1. If relational scheme is in BCNF, then it is also in 3NF.
>
> Thanks :-)...
> Regards Miroslav
Received on Wed Sep 27 2000 - 16:04:26 CEST