Explanation:Each transaction involved in the cycle is said to be deadlocked. 8. A deadlock exists in the system if and only if the wait-for graph contains a ___________.
A. Cycle
B. Direction
C. Bi-direction
D. Rotation
Answer:A
Explanation:Each transaction involved in the cycle is said to be deadlocked. 8. A deadlock exists in the system if and only if the wait-for graph contains a ___________.
A. Cycle B. Direction C. Bi-direction D. Rotation
Explanation:Each transaction involved in the cycle is said to be deadlocked. 9. Selecting the victim to be rollbacked to the previous state is determined by the minimum cost. The factors determining cost of rollback is