Writing a new COBOL Program for Datawarehouse

Amit Manas Dubey · New User Joined: 15 Dec 2006 Posts: 22 Location: Mumbai

Hi

I have to write a new COBOL program which uses a File as INPUT and generates another file as O/P.

The I/P file is abt 26000 bytes long and most of the fields are defined as COMP-3. From this I/P file, I have to take selected fields and move to the O/P file after expanding the compressed fields.(COMP-3).

I want to understand the logic best suited for writing this program. Will an Easytrieve be a better option ?

I am more concerned about the size of the O/P file since we need to expand all compressed fields. Pls advise from a performance perspective as well.

Amit

William Thompson · Posted: Sun Dec 17, 2006 1:57 am

EZT will work, heck, sort copy will work.
The least labor intensive way I can think of (good programmers are inherently lazy) is COBOL.
You must already have a copybook or copyable image of the record description, duplicate is and find/replace the comp3's out of there.
Input file with the comp3's and output file without.
Open both
perform till EOF
read in
move corresponding
write out
end perform
close both
EOJ