Which isolation levels should you recommend?

DRAG DROP

You plan to deploy a database to SQL Azure. You are designing two stored procedures named USP_1 and

USP_2 that have the following requirements:

Prevent data read by USP_1 from being modified by other active processes.

Allow USP_2 to perform dirty reads.

You need to recommend the isolation level for the stored procedures.

The solution must maximize concurrency.

Which isolation levels should you recommend? To answer, drag the appropriate isolation level to the correct stored procedure in the answer area.

Select and Place:

View Answer

Answer:

Explanation:

Note:

– SP1: repeatable read a repeatable read scan retains locks on every row it touches until the end of the transaction. Even rows that do not qualify for the query result remain locked. These locks ensure that the rows touched by the query cannot be updated or deleted by a concurrent session until the current transaction completes (whether it is committed or rolled back).

– SP2: read uncommitted permits repeatable reads