[Pgsql-ayuda] [Fwd: [HACKERS] Second decent PostgreSQL CBT released -
Introduction to Referential Integrity]
Roberto Andrade Fonseca
randrade@abl.com.mx
18 Feb 2002 22:53:50 -0600
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Hola:
Ech=E9nle un ojo a este bueno y bien presentado CBT (computer based
training) de integridad referencial.
No me jal=F3 con Opera, pero si con Gale=F3n. Tal qez requiera Flash.
Ai' me comentan.
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Saludos,
Roberto Andrade Fonseca
randrade@abl.com.mx
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Date: Tue, 19 Feb 2002 07:26:10 +1100
From: Justin Clift <justin@postgresql.org>
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Subject: [HACKERS] Second decent PostgreSQL CBT released - Introduction to
Referential Integrity
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Hi everyone,
Just wrapped up the 2nd in the series of PostgreSQL CBT's.
This one introduces the concepts of Referential Integrity :
http://techdocs.postgresql.org/college/002_referentialintegrity/index.php
It covers :
- The basic concepts
- Creating single column primary and foreign keys
- The optional clauses ON UPDATE and ON DELETE (and their
options NO ACTION/RESTRICT, CASCADE, SET NULL, SET DELETE)
- Dropping tables when they have RI constraints
This CBT doesn't cover multi-column keys, nor MATCH, MATCH FULL, MATCH
PARTIAL, as I ran out of time. Have to hold them over for another CBT.
:)
I've REALLY interested in what people think of the new look (a bunch of
improvements due to people's suggestions), and if people can suggest
further improvements/fixes/etc, they'll also be incorporated into
further CBT's.
Hope people find it worthwhile and useful.
:-)
Regards and best wishes,
Justin Clift
P.S. - Wow, what a beautiful sunrise out my window. Was worth the
effort just for that. :)
--
"My grandfather once told me that there are two kinds of people: those
who work and those who take the credit. He told me to try to be in the
first group; there was less competition there."
- Indira Gandhi
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