Re: Smart Database Tricks

From: Bob Badour <>
Date: Thu, 21 Jun 2007 20:36:40 -0300
Message-ID: <467b0b7d$0$4298$>

Jan Hidders wrote:

> On 21 jun, 21:17, vldm10 <> wrote:

>>On Jun 18, 7:41 pm, Jan Hidders <> wrote:
>>>On 18 jun, 20:59, vldm10 <> 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.

> It's a column of a relation. Conceptually it represent the role in the
> predicate that is represented by the relation.

Is an attribute a predicate variable of some sort? Received on Fri Jun 22 2007 - 01:36:40 CEST

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