Database Management System (DBMS) MCQ: 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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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.

Correct Answer: key-value locking

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