Re: Object-oriented thinking in SQL context?
From: paul c <toledobythesea_at_oohay.ac>
Date: Wed, 10 Jun 2009 01:07:15 GMT
Message-ID: <7HDXl.31225$PH1.7449_at_edtnps82>
Date: Wed, 10 Jun 2009 01:07:15 GMT
Message-ID: <7HDXl.31225$PH1.7449_at_edtnps82>
Walter Mitty wrote:
...
> Back when I learned databases, ER modeling (including diagrams) was NOT
> used for design purposes. It was used for data analysis.
> analysis and design are easily confused with each other, but they are not
> the same thing. The same would go for OOA and OOD.
> The fact that database design features don't go into an ER model is not a
> limitation of ER. It's a feature.
> ...
That's like an old joke, it's not a bug it's a feature! Probably too late now, I wish, back when ER people first started to try to inculcate me, that I had the nous to ask them how constraints are specified in ER. Received on Wed Jun 10 2009 - 03:07:15 CEST