Deadlocks Questions And Answers

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Deadlocks Questions and Answers

1. A system is in a ______ state if there exists a set of transactions such that every transaction in the set is waiting for another transaction in the set.

Deadlocks Questions and Answers

2. The deadlock state can be changed back to stable state by using _____________ statement.

Deadlocks Questions and Answers

3. What are the ways of dealing with deadlock ?

Deadlocks Questions and Answers

4. When transaction Ti requests a data item currently held by Tj , Ti is allowed to wait only if it has a timestamp smaller than that of Tj (that is, Ti is older than Tj ). Otherwise, Ti is rolled back (dies). This is

Deadlocks Questions and Answers

5. When transaction Ti requests a data item currently held by Tj , Ti is allowed to wait only if it has a timestamp larger than that of Tj (that is, Ti is younger than Tj ). Otherwise, Tj is rolled back (Tj is wounded by Ti ). This is

Deadlocks Questions and Answers

6. The deadlock in a set of transaction can be determined by

Deadlocks Questions and Answers

7. A deadlock exists in the system if and only if the wait-for graph contains a ___________.

Deadlocks Questions and Answers

8. Selecting the victim to be rollbacked to the previous state is determined by the minimum cost. The factors determining cost of rollback is

Deadlocks Questions and Answers

9. __________ rollback requires the system to maintain additional information about the state of all the running transactions.

Deadlocks Questions and Answers

10. Which of these is data type long literal?