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Re: Smart Database Tricks

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Thu, 21 Jun 2007 20:36:40 -0300
Message-ID: <467b0b7d$0$4298$9a566e8b@news.aliant.net>


Jan Hidders wrote:

> On 21 jun, 21:17, vldm10 <vld..._at_yahoo.com> wrote:
>

>>On Jun 18, 7:41 pm, Jan Hidders <hidd..._at_gmail.com> wrote:
>>
>>>On 18 jun, 20:59, vldm10 <vld..._at_yahoo.com> wrote:

[snip]

>>>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 Thu Jun 21 2007 - 18:36:40 CDT

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