Re: thinking about UPDATE
From: Mikito Harakiri <mikharakiri_at_iahu.com>
Date: Thu, 22 Jul 2004 11:40:40 -0700
Message-ID: <S2ULc.50$X73.342_at_news.oracle.com>
Date: Thu, 22 Jul 2004 11:40:40 -0700
Message-ID: <S2ULc.50$X73.342_at_news.oracle.com>
"Marshall Spight" <mspight_at_dnai.com> wrote in message
news:QIQLc.139454$a24.125173_at_attbi_s03...
> First, the case where the key is zero attributes. In this case,
> there is no project operation that can reduce the number of
> attributes in the key, so again nothing to do.
A key with zero attributes means that the relation is allowed to have one tuple only, right? Received on Thu Jul 22 2004 - 20:40:40 CEST