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.

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. Correct Answer Consistent

Data structures such as B+-trees would not be in a consistent state, and neither logical redo nor logical undo operations can be performed on an inconsistent data structure.

Related Questions

Which of the given options best describes the truthfulness of the following statements? (i) Ctrl + Y is used to perform "undo" operation in MS-Word. (ii) Ctrl + Z is used to perform "redo" operation in MS-Word. iii) Ctr l+ E  is used to Center the text
For correct behaviour during recovery, undo and redo operation must be
If ___________ are not obtained in undo operation it will cause problem in undo-phase.