Database Security and Authorization MCQs in DBMS

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1. : What is the primary goal of deadlock detection in a DBMS?



2. Which technique is used to detect deadlocks by constructing a resource allocation graph?



3. In a Resource Allocation Graph, what does a cycle represent?



4. Which of the following is a common strategy for resolving deadlocks?



5. Which methods are used to prevent deadlocks rather than detecting them?



6. In the Wait-Die scheme, what happens when a younger transaction requests a resource held by an older transaction?



7. Which deadlock resolution strategy involves selecting and aborting the transaction with the smallest amount of work done or least impact on the system?



8. What is the primary advantage of using a timeout approach for deadlock detection?



9. Which of the following is NOT a characteristic of the Wait-Die scheme for deadlock prevention?



10. In which deadlock detection approach are transactions periodically checked for cycles in the Resource Allocation Graph?



11. What is the main challenge associated with the wait-for graph in deadlock detection?



12. Which approach to deadlock resolution involves killing all transactions in the cycle and then restarting them?



13. In a deadlock detection algorithm, which method is used to keep track of transactions and resources to determine if a deadlock has occurred?



14. Which deadlock resolution strategy can potentially lead to reduced performance due to frequent transaction aborts and restarts?



15. In the context of deadlock prevention, which technique ensures that no circular wait conditions can occur by enforcing a specific order of resource acquisition?



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