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Question

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.

a.

B+ tree locking

b.

Link level locking

c.

Key-value locking

d.

Next value locking

Posted under DBMS

Answer: (c).Key-value locking

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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...