What happens during INPUT PROCEDURE and OUTPUT PROCEDURE?

1.	What happens during INPUT PROCEDURE and OUTPUT PROCEDURE?
Answer» In INPUT PROCEDURE, the input file will be opened, the records from the file are READ and can ALSO be edited. The records will then be released to sorting OPERATION and then the file will be CLOSED. Whereas in OUTPUT PROCEDURE, the output file will be opened, the records post sorting will be written in the output file and then the file will be closed.

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