Re: SQL for Modeling Generalization Hierarchies
From: Laconic2 <laconic2_at_comcast.net>
Date: Thu, 27 May 2004 16:39:31 -0400
Message-ID: <sIydnbaWdPwrzCvd4p2dnA_at_comcast.com>
Date: Thu, 27 May 2004 16:39:31 -0400
Message-ID: <sIydnbaWdPwrzCvd4p2dnA_at_comcast.com>
"Robert Brown" <robertbrown1971_at_yahoo.com> wrote in message
news:240a4d09.0405270856.4ce55c7d_at_posting.google.com...
> adding attributes to the employees table because most attributes will
> be NULL (since janitors are never doctors at the same time).
By the way, after I wrote "a DBA is never a janitor or a doctor" it occurred to me that when I was a DBA there were days when I felt like I was both at the same time! ;) Received on Thu May 27 2004 - 22:39:31 CEST