A computer operator accidentally used the wrong master file when updating a transaction file.As a result,the master file data is now unreadable.Which control could best have prevented this from happening?
A)Header record.
B)Validity check.
C)Trailer record.
D)Parity check.

Question

Quizplus · Accepted Answer

A header record could best have prevented this from happening because it includes file identification information that can be checked before a file is processed to ensure the correct file is being used.

A Computer Operator Accidentally Used the Wrong Master File When