To perform logical redo or undo, the database state on disk must be operation _____________, that is, it should not have partial effects of any operation.
A. Persistent
B. Resistant
C. Consistent
D. None of the mentioned
Answer:A
To perform logical redo or undo, the database state on disk must be operation _____________, that is, it should not have partial effects of any operation.
A. Persistent B. Resistant C. Consistent D. None of the mentioned