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

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

(a) Commit

(b) Rollback

(c) Savepoint

(d) Deadlock

The question was asked at a job interview.

This interesting question is from Deadlocks in division Concurrency Control of Database Management

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The correct option is (b) Rollback

The best I can explain: Rollback is used to rollback to the point before lock is obtained.

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