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From: Thomas Balzer <tbalzer@tjb.freinet.de>
To: postgres@postgres.Berkeley.EDU
Subject: not null, unique and foreign keys
Date: Sun, 21 Aug 1994 18:57:56 +0200 (MET DST)
Message-ID: <m0qcGDU-0001WhC@tjb.freinet.de> (raw)

Hello everybody,

is there a way to tell Postgres that an attribute in a class is unique or
not null? How to define a foreign key? I can't find anything in the documentation
of Postgres 4.2. I think they used foreign keys for the system tables, aren't they?

Thanks,
--- Thomas

| Thomas Balzer | Hans-Thoma-Strasse 17            | D-79664 Wehr         |
| Germany       | Internet: tbalzer@tjb.freinet.de | Phone: +49-7762-1412 |

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