Oracle-L: RE: ON DELETE SET NULL ??

From: Igor Neyman <ineyman_at_perceptron.com>
Date: Mon, 19 May 2003 11:42:19 -0800
Message-ID: <F001.0059CDBF.20030519114219@fatcity.com>

If referenced RECORDING_ID in "parent" ED_RECORDINGS gets deleted, then RECORDING_ID in "child" table ED_RECORDINGS_PAYMENTS will be set to null.

Igor Neyman, OCP DBA
ineyman_at_perceptron.com

-----Original Message-----
Linsy
Sent: Monday, May 19, 2003 1:57 PM
To: Multiple recipients of list ORACLE-L

Hi,

I used Erwin 3.5.2 to generate script. The DDL has the following, what exactly is ON DELETE SET NULL part?

ALTER TABLE ED_RECORDINGS_PAYMENTS

       ADD FOREIGN KEY (RECORDING_ID)
                             REFERENCES ED_RECORDINGS
                             ON DELETE SET NULL;

Thanks in advance.

Janet

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Author: Janet Linsy
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Author: Igor Neyman
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