Q. Which statements are correct regarding indexes?

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Q. Which of the following causes system to crash

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Q. The database is partitioned into fixed-length storage units called

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Q. The failure occurred sufficiently early during the transfer that the destination block remains intact.

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Q. Which kind of failure loses its data in head crash or failure during transfer operation.

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Q. The assumption that hardware errors and bugs in the software bring the system to a halt, but do not corrupt the nonvolatile storage contents, is known as the

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Q. The transaction can no longer continue with its normal execution because of some internal condition, such as bad input, data not found, overflow, or resource limit exceeded. This is

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Q. The system has entered an undesirable state (for example, deadlock), as a result of which a transaction cannot continue with its normal execution. This is

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Q. Which of the following belongs to transaction failure

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Q. Which one of the following is a failure to system

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Q. The recovery scheme must also provide

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Q. Instead of locking index leaf nodes in a two-phase manner, some index concurrency-control schemes use ___________ on individual key values, allowing other key values to be inserted or deleted from the same leaf.

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Q. B-link tree requires a pointer to its __________ sibling.

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Q. In crabbing protocol to inset or delete a key value the leaf node has to be locked in ___________ mode.

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Q. If needed to split a node or coalesce it with its siblings, or redistribute key values between siblings, the crabbing protocol locks the parent of the node in ____________ mode.

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Q. In crabbing protocol the the lock obtained on the root node is in _________ mode.

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Q. The deadlock can be handled by

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Q. In crabbing protocol locking

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Q. How many techniques are available to control concurrency on B+ trees?

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Q. Why do we need concurrency control on B+ trees ?

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