Re: Does Codd's view of a relational database differ from that of Date & Darwin? [M.Gittens]
From: Jan M. Nelken <Unknown.User_at_Invalid.Domain>
Date: Thu, 09 Jun 2005 03:51:55 -0400
Message-ID: <trudnfc9iNy4aDrfRVn-pA_at_rogers.com>
Date: Thu, 09 Jun 2005 03:51:55 -0400
Message-ID: <trudnfc9iNy4aDrfRVn-pA_at_rogers.com>
mountain man wrote:
> Let me get the ascii straight ...
>
> Is it not possible that one may notice something
> in the real world (only) by its absence?
Only with the prior knowledge that something did existed before (An example: when entering an empty room you won't be able to say anything about an absent chair unless you have prior knowledge that chair existed and was present in this room before)
Jan M. Nelken Received on Thu Jun 09 2005 - 09:51:55 CEST