Re: Guessing?
From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Tue, 27 May 2008 12:41:37 -0300
Message-ID: <483c2bb4$0$4034$9a566e8b_at_news.aliant.net>
>
> A practitioner who (knowingly) tolerates or suggests that is likely
> either a sucker or a charlatan. (Bob B called Codd's example a straw-man.)
Date: Tue, 27 May 2008 12:41:37 -0300
Message-ID: <483c2bb4$0$4034$9a566e8b_at_news.aliant.net>
>> It seems to me that every base relvar will in practice have some >> defined intensional definition outside the RM formalism and >> inaccessible to the DBMS.
>
> A practitioner who (knowingly) tolerates or suggests that is likely
> either a sucker or a charlatan. (Bob B called Codd's example a straw-man.)
Codd's example is a straw man because he omits from the design the information necessary for the dbms to calculate the disjointedness of the base relations. Received on Tue May 27 2008 - 17:41:37 CEST