RE: triggers

A very simple usage would be to provide a running balance in a header record
based upon totals of a field in detail records.  For example, if you wanted
to keep the year-to-date balance for a General Ledger account you could
write a trigger program once that added or subtracted the detail record's
amount from the header record's running balance field.  Then, trigger the
Detail file for *INSERT, *UPDATE, and *DELETE.  From then on you never have
to worry about the field in the header file matching the detail file, even
if someone uses DFU or ODBC or JDBC or SQL or RPG.  It is a lot of
programming that you never have to worry about again. It just happens. The
peace of mind is considerable.

-----Original Message-----
From: Srinivasan Lakshmi Narasimhan [mailto:narasu@wipsys.soft.net]
Sent: Sunday, December 05, 1999 10:54 PM

Subject: Re: triggers



hi,

kindly provide me the actual usage/need for triggers. instead i can go for a
program with logic steps of insert/update/delete of records in the relative
files
as soon as access to parent file is done. is it right /efficient way?

s.lakshmi narasimhan
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