Re: SQLRPG error MONMSG possible ?

[Rob Berendt <rob@xxxxxxxxx>]

You ever read the Dilbert cartoon about the guru who spouted 
useless database concepts who died when shown actual code by 
someone who got work done?

I find it hard to think of an example of a file that would be 
used that I wouldn't want a unique key on.  The timestamp might 
be acceptable on a log of activities.





qappdsn@attglobal.net on 04/07/2000 11:52:22 AM
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Subject:        Re: SQLRPG error MONMSG possible ?

Peter,

You bring up a very valid point when trying to create "unique" keys.

The bigger question is, is this the best technique, or, are unique keys truly
needed.

IMHO, if you have a true need for a unique key, a timestamp will work nicely.
But, unless this key is going to be propagated to child records, there is no 
true
need for it's existence.  The purpose of a key is to identify an entity so that
other files can have a relationship with that entity.  Otherwise it's existence
is just a programming exercise.

All keys being equal, without a child dependency, the record number can be used
to identify uniqueness.


Peter Dow wrote:

> Hi Istv;n,
>
> I don't see a reply from Dan, so I'll jump in.

<<snip>>

> As someone pointed out in another message, there is a
> remote possibility that after having checked for an existing record and
> before doing the actual write, another job could actually add that record,
> causing the duplicate error.
>

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