Compaq COBOL AAQ2G1FTK - Manual (Page 240)

Processing Files and Records
6.6 Backing Up Your Files
6.6 Backing Up Your Files
Files can become unusable if either of the following situations occur:
• Your disk file becomes corrupted by a hardware error.
• Your disk file becomes corrupted with bad data.
Proper backup procedures are the key to successful recovery. You should back up
your disk file at some reasonable point (daily, weekly, or monthly, depending on
file activity and value of data), and save all transactions until you create a new
backup. In this way, you can easily recreate your disk file from your last backup
file and transaction files whenever the need arises.
6–60 Processing Files and Records