Primary -- foreign keys
From: keith <prk25_at_yahoo.com>
Date: 10 Aug 2001 06:50:44 -0700
Message-ID: <adbca63f.0108100550.b176fc5_at_posting.google.com>
Date: 10 Aug 2001 06:50:44 -0700
Message-ID: <adbca63f.0108100550.b176fc5_at_posting.google.com>
Hi
I am trying to understand why would anyone want to create the
following:
create table abc
x integer primary key,
(
y char(20),
foreign key (x) references abc(x)
);
What's being accomplished by creating a forein key which references a primary key of the same table??? Primary and foreign keys are on the same column of the same table????
Thanks
Keith Received on Fri Aug 10 2001 - 15:50:44 CEST