RE: Logical File or OPNQRYF or anyother way ? - Legacy iSeriesFlatFiles

[rob@xxxxxxxxx]

Joe,

Regarding rule 12:  "Codd's 12th rule specified that an RDBMS
should not be accessible in a way that subverts its constraints and
integrity rules."
Using traditional RPG on a file does not violate rule 12.  If I use 
constraints, and referential integrity, RPG will NOT allow you to bypass 
the constraints and RI.
True?  If your testing shows otherwise, enlighten me.  It just requires 
that you do a little more checking, and a little less ASSUMption when you 
do a WRITE or an UPDATE and the operation fails.
Heck, I can't even violate these rules using UPDDTA, WRKDBF, etc.

Rob Berendt
-- 
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





"Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx> 
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03/07/2005 07:32 PM
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RE: Logical File or OPNQRYF or anyother way ? - Legacy  iSeriesFlatFiles






> From: Joe Pluta
> 3, 5, 6 and 12 tend to
> exclude every database one way or another.

<sigh>  Too much typing.  Rule 5 is rarely a problem.  Rule 3 simply
sucks in RPG.  Rules 6, 9, 10, 11 and 12 are the ones that cause
problems.

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