Re: Smart Database Tricks
From: Vadim Tropashko <vadimtro_invalid_at_yahoo.com>
Date: Thu, 21 Jun 2007 12:26:43 -0700
Message-ID: <1182454003.858882.184510_at_x35g2000prf.googlegroups.com>
Date: Thu, 21 Jun 2007 12:26:43 -0700
Message-ID: <1182454003.858882.184510_at_x35g2000prf.googlegroups.com>
On Jun 21, 12:17 pm, vldm10 <vld..._at_yahoo.com> wrote:
> On Jun 18, 7:41 pm, Jan Hidders <hidd..._at_gmail.com> wrote:
> > If this is a relation then
> > all columns are attributes and since you have represented all the
>
> Can you please, tell me what is the definition of the attribute in RM.
> I didn't notice this definition in RM.
Perhaps it is the standard set theory defintion?
Lets move the letter M to one position forward, so that RM becomes RL. In the RL an [atomic] attribute is defined as an empty relation A such that there doesn't exist relation X such that
A > X > 00 Received on Thu Jun 21 2007 - 21:26:43 CEST