What type of consistency level prevents all three phenomena: dirty read, non-repeatable read, and phantom read?Question 5Select one:A.Read CommittedB.Repeatable ReadC.Read UncommittedD.SerializableE.Snapshot Isolation

Which of the following concurrency control techniques ensures that transactions maintain consistency by preventing the occurrence of phenomena like dirty reads, non-repeatable reads, and phantom reads?Multiversion Concurrency Control (MVCC)Two-Phase Locking (2PL)

What does the term "degree 3 consistency" ensure in a transaction?Question 24Select one:A.Transaction T does not read dirty data from other transactions.B.Other transactions do not dirty any data read by T before T completes.C.Transaction T does not overwrite dirty data of other transactions.D.Transaction T does not commit any writes until it completes all its writes.E.All the choices apply

Discuss Consistency and Isolation property of a transaction

In a strong consistency model, what do users see regarding data?a.No consistency guaranteesb.Temporary inconsistenciesc.Absolute consistency with the most recent writed.Different data at different times

Which of the following is/are correct?Question 5Select one or more:Select one or more:a.Eventual consistency ensures that data is eventually consistent in a distributed database system. Thus, no any read-write conflicts and write-write conflicts can occur under eventual consistency.b.Under eventual consistency, all servers eventually "converge" to the same state at some point in future.c.Eventual consistency does not order concurrent writes as they are executed.d.Eventual consistency guarantees that, if updates are made to a given data item, all reads to that item will return the same value.