IBM Mainframe COBOL vs. AS/400 COBOL

[Lee Winson]

I've been transferred from the mainframe to an AS/400 team, and was
wondering if there were any significant differences between the
IBM mainframe COBOL and the AS/400 COBOL. So far they seem virtually
identical (other than COMP is COMP-3, you gotta say BINARY.)

By the way, are there any differences in coding to get better
performance? In the mainframe, I made my subscripts COMP SYNC (I don't
like INDEX fields).

Thanks.

[Georg76871]

I heard from a co-worker the "redefines" doesnt exist on AS/400 ?

George
======================================================
George Lewycky
GEORG...@aol.com OR
lew...@aip.org

[John M Perry]

georg...@aol.com (Georg76871) wrote:
>
>
> I heard from a co-worker the "redefines" doesnt exist on AS/400 ?
>

well your co-worker should be fired then

[James Holloway]

John M Perry <j.p...@bbcnc.org.uk> writes:
>> I heard from a co-worker the "redefines" doesnt exist on AS/400 ?
>>

>well your co-worker should be fired then

C

They probably meant that you can't create redefinitions in AS/400 data
base files via Data Description Specifications (DDS).

Nor can you set up 88 levels, or group levels. You can redefine the
record layout pulled from the externally described data base file in
your cobol program, but that can defeat the benefits of having the
data described externally and will burn you when someone changes the
DDS but forgets about internal redefines of the record layouts.

You pull multiple physical files together as a single common logical
file in your program, and I guess you could consider that a form of
redefinition also.

Jim Holloway.