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Writing a new COBOL Program for Datawarehouse

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

PostPosted: Sun Dec 17, 2006 1:12 am    Post subject: Writing a new COBOL Program for Datawarehouse
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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
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William Thompson

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Joined: 18 Nov 2006
Posts: 3158
Location: Tucson AZ

PostPosted: Sun Dec 17, 2006 1:57 am    Post subject:
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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
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