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A transaction is made to wait until all ________ locks held on the item are released(a) Compatible(b) Incompatible(c) Concurrent(d) EquivalentI got this question by my school principal while I was bunking the class.Asked question is from Lock Based Protocols topic in section Concurrency Control of RDBMS |
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Answer» CORRECT OPTION is (a) Compatible To explain I would say: A transaction is made to wait until all compatible locks held on the item are RELEASED. This ENSURES that no other transaction is concurrently accessing the same item. |
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