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Chapter 6 / Exercise 18
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16.Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets stated goals. You manage a Microsoft SQL Server environment with several databases. You need to ensure that queries use statistical data and do not initialize values for local variables. Solution: You enable the PARAMETER_SNIFFING option for the databases. Does the solution meet the goal? A. Yes B. No Answer:A Explanation:PARAMETER_SNIFFING = { ON | OFF | PRIMARY} enables or disables parameter sniffing. This is equivalent to Trace Flag 4136. SQL server uses a process called parameter sniffing when executing queries or stored procedures that use parameters. During compilation, the value passed into the parameter is evaluated and used to create an execution plan. That value is also stored with the execution plan in the plan cache. Future executions of the plan will re-use the plan that was compiled with that reference value.
17.You manage a Microsoft SQL Server environment in a Microsoft Azure virtual machine. You must enable Always Encrypted for columns in a database. You need to configure the key store provider. What should you do?
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Chapter 6 / Exercise 18
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15/ 4318.You plan to deploy 20 Microsoft Azure SQL Database instances to an elastic pool in Azure to support a batch processing application. Two of the databases in the pool reach their peak workload threshold at the same time every day. This leads to inconsistent performance for batch completion. You need to ensure that all batches perform consistently. What should you do?

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