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Question

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.

a.

Shared

b.

Exclusive

c.

Read only

d.

None of the mentioned

Posted under Concurrency Control DBMS

Answer: (b).Exclusive

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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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