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Consider a Simple Checkpointing Protocol and the following set of operations in the log. (start, T4); (write, T4, y, 2, 3); (start, T1); (commit, T4); (write, T1, z, 5, 7); (Checkpoint); (start, T2); (write, T2, x, 1, 9); (commit, T2); start, T3); (write, T3, z, 7, 2); if a crash happens now and the system tries to recover using both undo and redo operations, what are the contents of the undo list and the redo list?
Consider a simple checkpointing protocol and the following set of operations in the log. (start, T4); (write, T4, y, 2, 3); (start, T1); (commit, T4); (write, T1, z, 5, 7); (checkpoint); (start, T2); (write, T2, x, 1, 9); (commit, T2); (start, T3), (write, T3, z, 7, 2); If a crash happens now and the system tries to recover using both undo and redo operations, what are the contents of the undo list and the redo list?
The undo and redo operations must be _________ to guarantee correct behaviour, even if a failure occurs during recovery process.
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.
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
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.
From the following list, identify those which are relevant for the theory of rational choice: (a) Aggregation of social behaviour (b) Random behaviour (c) Determinants of behaviour (d) Prediction of behaviour (e) Study of interest groups (f) Behaviour problems associated with information Indicate your answer from the codes. Select the correct option:
If ___________ are not obtained in undo operation it will cause problem in undo-phase.
___________ determines which transactions to undo, which pages were dirty at the time of the crash, and the LSN from which the redo pass should start.
h,J,K,L,M,N and O are the only legislators eligible to vote on Bills 1,2 and 3, each of which will be passed if at least four legislators eligible vote in favor of it. each legislator must vote on all three bills; on abstentions are possible. The following is known : *H must vote against all three bills; each of the other legislators must vote in favor of at least one bill and against at lest one bill. *j must vote against Bills 1. *O Must vote against Bills 2 and 3. * L must the same way that K dose on all three bills.*N must vote the same way that O dose on all three bills. which of the following must vote in favor of Bill 1 ?