MESSAGE
| DATE | 2014-12-18 |
| FROM | Ruben Safir
|
| SUBJECT | Re: [LIU Comp Sci] Normalization review
|
From owner-learn-outgoing-at-mrbrklyn.com Thu Dec 18 13:08:02 2014
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Date: Thu, 18 Dec 2014 13:08:01 -0500
From: Ruben Safir
To: learn-at-mrbrklyn.com
Subject: Re: [LIU Comp Sci] Normalization review
Message-ID: <20141218180801.GB5809-at-panix.com>
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Do you have HIS definition for BCNF because if I recall, he said it was
exclusive to himself since it is defined in different places
differently.
On Thu, Dec 18, 2014 at 11:59:18AM -0500, maneeshkongara wrote:
> A table in 2NF is free of Functional Dependencies and a table in 3NF is
> free of transitive deprecates along with functional dependencies.
> On Dec 18, 2014 11:56 AM, "Ruben Safir" wrote:
>
> > what exactly is the difference between the 2nd and 3rd NF
> >
> > Ruben
> >
> > On Thu, Dec 18, 2014 at 11:09:16AM -0500, Ruben Safir wrote:
> > > is a foriegn key a dependedncy for a relation with a seperae primary
> > > key?
> > >
> > >
> > >
> > > Like Course has a cno primary and a deptno foreign key.
> > >
> > >
> > > On Thu, Dec 18, 2014 at 10:50:31AM -0500, Sergei Glikstein wrote:
> > > > where is that?
> > > >
> > > > On Thu, Dec 18, 2014 at 10:45 AM, Ruben Safir
> > wrote:
> > > > >
> > > > > On Thu, Dec 18, 2014 at 10:39:29AM -0500, Sergei Glikstein wrote:
> > > > > > i am in the library upstairs
> > > > > >
> > > > > > On Thu, Dec 18, 2014 at 10:34 AM, Ruben Safir
> > > > > wrote:
> > > > > > >
> > > > > > > Anyone want to review normalization?
> > > > > > >
> > > > > > > Ruben
> > > > > > >
> > > > > > >
> > > > >
> > > > >
> > > > > why not come here so I can pick your brain without distractions and
> > with
> > > > > a network that functions.
> > > > >
> > > > > Everytime i go to that damn libvrary i waste my time
> > > > >
> > > > > Ruben
> > > > >
> > > > > BTW - you know IRC - xchat?
> > > > >
> > > > > Ruben
> > > > >
> > > > >
> >
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