Martjin,
> Interesting. However, in my experience very few things have "natural
> keys". There are no combination of attributes for people, phone calls
> or even real events that make useful natural keys.
I certainly hope that I never have to pick up one of your projects. A
table without a natural key is a data management disaster. Without a
key, it's not data, it's garbage.
--
--Josh
Josh Berkus
Aglio Database Solutions
San Francisco