RE: Logical File Access

It's a MIDRANGE-L question since logical files are not unique to RPG.

You'd have the same issue with any programming language. 


Thanks,
Tommy Holden


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Cindy Major
Sent: Tuesday, April 11, 2006 3:17 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Logical File Access

Ken,
Thanks for your help.     If you can spare a minute, could you please
explain why this is a Midrange-L question, so I'll understand for the
future.

Tbanks !

Cindy 

-----Original Message-----
From: rpg400-l-bounces+cmajor=nucorauburn.com@xxxxxxxxxxxx
[mailto:rpg400-l-bounces+cmajor=nucorauburn.com@xxxxxxxxxxxx] On Behalf
Of Ken Sims
Sent: Friday, April 07, 2006 4:29 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: Logical File Access

Hi Cindy -

>I have created a logical file that has only one key, Consolidation#.
>I have always thought the next logical order was RRN.     Can anyone
>explain why this logical keyed by 'Consol#' does not read in RRN order?
>THANKS !

This question belongs in the MIDRANGE-L list.  If you have any followup 
questions please post them there.

If you don't specify it, that means you don't care about the order
beyond 
the listed key field(s).  If this logical file can share an access path
and 
that access path has additional key fields, this logical file will be 
ordered according to the way that that logical file is ordered.

If you want to ensure that the records are in RRN order after the key 
field(s), you need to say so by using the FIFO keyword in the DDS for
the 
logical file.

Note that if you use this keyword, the physical file(s) cannot reuse 
deleted records.

Ken
http://www.kensims.net/
Opinions expressed are my own and do not necessarily represent the views
of my employer or anyone in their right mind.