Re: Objects and Relations

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Sat, 17 Feb 2007 13:27:03 GMT
Message-ID: <HoDBh.7533$R71.114359@ursa-nb00s0.nbnet.nb.ca>

Keith H Duggar wrote:

> David BL wrote:
>

>>Bob Badour wrote:
>>
>>>If you have x, y, z, deltaX, deltaY, and deltaZ you
>>>won't need orientation. The location of a piece is
>>>actually an interval
>>
>>Yes, because Lego blocks can only be rotated about the
>>vertical axis z by 0,90,180,270 degrees. The interval
>>approach also brings out their symmetry under rotation by
>>180 degrees. Also square shaped blocks (deltaX = deltaY)
>>are symmetric under rotation by 90 degrees.

>
> I would like to claim that this very discussion reveals one
> of the advantages of trying to think without entities. It
> encourages us to think about the /problem/ instead. That is
> to think about our goals, our requirements, our knowledge,
> etc. It forces us to consider the facts at hand and those
> that may arise and design solutions for handling them.
>
> Is this part of what DB professionals do for a living?

Yes.

> What lingo is used to describe this process?

'Thinking'. Received on Sat Feb 17 2007 - 07:27:03 CST