Re: primary and foregin keys
From: <ak_tiredofspam_at_yahoo.com>
Date: 25 Dec 2004 19:20:52 -0800
Message-ID: <1104031252.387696.253800_at_f14g2000cwb.googlegroups.com>
Date: 25 Dec 2004 19:20:52 -0800
Message-ID: <1104031252.387696.253800_at_f14g2000cwb.googlegroups.com>
>> ... in an RDBMS, one kind of entity should be in a one and
nly one table. ...<<
should you say "... should USUALLY be in a one ... ", everybody would agree.
We all know that there are some exceptions, most notably a well known approach to open a new SALES table every quarter, then purge old data by dropping the oldest one. Received on Sun Dec 26 2004 - 04:20:52 CET