Re: Has E/R had a negative impact on db?
From: Alfredo Novoa <alfredo_novoa_at_hotmail.com>
Date: 22 Apr 2006 04:33:02 -0700
Message-ID: <1145705582.591108.305510_at_i40g2000cwc.googlegroups.com>
Date: 22 Apr 2006 04:33:02 -0700
Message-ID: <1145705582.591108.305510_at_i40g2000cwc.googlegroups.com>
I sympathize with your thought. The only thing we can save from E/R are some diagraming conventions to use with conceptual models. Something very far from Chen's ambitions.
On the other hand it helped to cause a lot of confusion. When I was studiyng database theory in the university I had to "learn" many weird things about E/R. For instance we were forced to start a database design with an E/R diagram and to use a transformation technique which often leaded to redundant designs.
Regards
Alfredo
Received on Sat Apr 22 2006 - 13:33:02 CEST