I seem to recall hearing that no current RDBMS meets all of Codd's rules..

http://www.cse.ohio-state.edu/~sgomori/570/coddsrules.html

"Note that based on these rules there is no fully relational database
management system available today. In particular, rules 6, 9, 10, 11 and 12
are difficult to satisfy."

Charles


On Fri, May 17, 2013 at 2:29 PM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:

Does AS/400 follows all 12 codd's rules.

Yes, Absolutely. Unequivocally.

-Nathan

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