IN__________NO_TWO_ABORTS_OCCUR_UNLESS_TWO_CONCURRENT_TRANSACTIONS_UPDATE_THE_SAME_DATA_ITEM.?$

IN__________NO_TWO_ABORTS_OCCUR_UNLESS_TWO_CONCURRENT_TRANSACTIONS_UPD

1.	IN__________NO_TWO_ABORTS_OCCUR_UNLESS_TWO_CONCURRENT_TRANSACTIONS_UPDATE_THE_SAME_DATA_ITEM.?$
A.	Multiversion scheme
B.	Timestamp protocol
C.	Lock based protocol
D.	Snapshot isolation
Answer» E.

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IN__________NO_TWO_ABORTS_OCCUR_UNLESS_TWO_CONCURRENT_TRANSACTIONS_UPDATE_THE_SAME_DATA_ITEM.?$

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