Question: A differential file facilitates rollback because: a. Record changes and beforeimages can be assigned to a high-speed storage device b. The primary file constitutes beforeimage
A differential file facilitates rollback because:
a. Record changes and beforeimages can be assigned to a high-speed storage device
b. The primary file constitutes beforeimage versions of the updated records
c. The differential file constitutes before image versions of the updated records
d. It is easier to identify which users of the database have been affected by the corrupted records
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