Q. In ________ no two aborts occur unless two concurrent transactions update the same data item.

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Q. Which of the following transactions can multiversion two phase locking protocol not differentiate.

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Q. ________ deletes a data item from a database

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Q. Which of the following does not lock the entire index

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Q. Which of the following is included in the operational mechanism of the index locking protocol?

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Q. _________ is a form of two degree consistency designed for programs that iterate over tuples of a relation by using cursors.

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Q. Transactions that involve user interactions are called __________

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Q. State true or false: Key value locking provides increased concurrency

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Q. To prevent the phantom phenomenon, _______ is used

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Q. Which of the following does cursor stability ensure

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Q. State true or false: Exclusive locks are held until transaction commit in degree two consistency

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Q. In order to maintain transactional integrity and database consistency, what technology does a DBMS deploy?

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Q. Which of the following are introduced to reduce the overheads caused by the log-based recovery?

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Q. Which of the following protocols ensures conflict serializability and safety from deadlocks?

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Q. Which of the following is the block that is not permitted to be written back to the disk?

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Q. If transaction Ti gets an explicit lock on the file Fc in exclusive mode, then it has an__________ on all the records belonging to that file.

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Q. Which refers to a property of computer to run several operation simultaneously and possible as computers await response of each other

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Q. All lock information is managed by a __________ which is responsible for assigning and policing the locks used by the transactions.

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Q. The ____ lock allows concurrent transactions to access the same row as long as they require the use of different fields within that row.

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Q. Which of the following is a procedure for acquiring the necessary locks for a transaction where all necessary locks are acquired before any are released?

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