Re: Using PF constraints

["Booth Martin" <Booth@xxxxxxxxxxxx>]

Time for me to learn again.  

Why would a constraint be preferable to a trigger?   Or would you use both,
with the constraint triggering other events on other related files?

 
---------------------------------------------------------
Booth Martin   http://www.MartinVT.com
Booth@xxxxxxxxxxxx
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-------Original Message-------
 
From: Midrange Systems Technical Discussion
Date: Tuesday, April 29, 2003 09:45:15
To: 'midrange-l@xxxxxxxxxxxx'
Subject: Using PF constraints
 
Hello all,
 
I am canvassing for opinions on using ADDPFCST to effect data purges instead
of writing (comparatively) more complex RPG programs to perform this
function. The way I see it, if we add the appropriate constraint to a
detail file which has an associated header file with a primary key and
specify 'cascading delete', deleting records from the header file will
automatically zap the associated detail records right?
 
Is there a good reason why I've never seen this being used? Or is it just
the shops that I've worked with that do not think this is a useful feature?
 
Thanks in advance for your opinions.
 
 
Martin
 
 
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