triggers
Hi, I have a problem I am using postgresql database and I want to enforce
triggers between my related tables ( tables with relationship), one
table
has a foreign key and the other the a primary key, I would like to use
triggers to update, delete, and insert in this tables but the table with
the
foreign key should first check in the other table before any action is
taken, Which is the simplest sql or C language script can I use to
enforce
triggers within my tables, please demonstrate a simple scenerio thanks
<br><br><br>Martin Wainaina Kuria
Programmer/Database Administrator
Bsc. Computer Science
Kenyaweb.com Ltd
www.kenyaweb.com
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On Tue, 14 Aug 2001, Martin Kuria wrote:
Hi, I have a problem I am using postgresql database and I want to enforce
triggers between my related tables ( tables with relationship), one
table
has a foreign key and the other the a primary key, I would like to use
triggers to update, delete, and insert in this tables but the table withthe
foreign key should first check in the other table before any action is
taken, Which is the simplest sql or C language script can I use toenforce
triggers within my tables, please demonstrate a simple scenerio thanks
pgsql-bugs is definately not the place for this message (response to
-general).
Since I can't tell what you're precisely trying to do from the
explanation above, the easiest starting point is to look at the
documentation for triggers and then at techdocs.postgresql.org for
a couple trigger examples.
However, I don't believe you can guarantee that the foreign key trigger is
going to happen before your trigger.