Ensurepass

QUESTION 16
Your database contains a table named SalesOrders. The table includes a DATETIME column named OrderTime that stores the date and time each order is placed. There is a non-clustered index on the OrderTime column. The business team wants a report that displays the total number of orders placed on the current day. You need to write a query that will return the correct results in the most efficient manner. Which Transact-SQL query should you use?
A. SELECT COUNT(*) FROM SalesOrders
WHERE OrderTime = CONVERT(DATE, GETDATE())
B. SELECT COUNT(*) FROM SalesOrders
WHERE OrderTime = GETDATE()
C. SELECT COUNT(*) FROM SalesOrders
WHERE CONVERT(VARCHAR, OrderTime, 112) = CONVERT(VARCHAR, GETDATE(I, 112))
D. SELECT COUNT(*) FROM SalesOrders
WHERE OrderTime >= CONVERT(DATE, GETDATE())
AND OrderTime < DATEADD(DAY, CONVERT(DATE, GETDATE())) Correct Answer: D Explanation/Reference: Verified answer as correct. QUESTION 17 Your application contains a stored procedure for each country. Each stored procedure accepts an employee identification number through the @EmpID parameter. You plan to build a single process for each employee that will execute the stored procedure based on the country of residence. Which approach should you use? A. a recursive stored procedure B. Trigger C. An UPDATE statement that includes CASE D. Cursor E. The foreach SQLCLR statement Correct Answer: D Explanation/Reference: QUESTION 18 You use Microsoft SQL Server 2012 to develop a database application. You create a stored procedure named dbo.ModifyData that can modify rows. You need to ensure that when the transaction fails, dbo. ModifyData meets the following requirements: Does not return an error Closes all opened transactions Which Transact-SQL statement should you use? A. BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@ TRANCOUNT = 0 ROLLBACK TRANSACTION; END CATCH B. BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@ERROR != 0 ROLLBACK TRANSACTION; THROW; END CATCH C. BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@TRANCOUNT = 0 ROLLBACK TRANSACTION; THROW; END CATCH D. BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@ERROR != 0 ROLLBACK TRANSACTION; END CATCH Correct Answer: D Explanation/Reference: Verified answer as correct. QUESTION 19 You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly. You discover that during reads, the transaction experiences blocking from concurrent updates. You need to ensure that throughout the transaction the data maintains the original version. What should you do? A. Add a HASH hint to the query. B. Add a LOOP hint to the query. C. Add a FORCESEEK hint to the query. D. Add an INCLUDE clause to the index. E. Add a FORCESCAN hint to the Attach query. F. Add a columnstore index to cover the query. G. Enable the optimize for ad hoc workloads option. H. Cover the unique clustered index with a columnstore index. I. Include a SET FORCEPLAN ON statement before you run the query. J. Include a SET STATISTICS PROFILE ON statement before you run the query. K. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query. L. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query. M. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query. N. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query. Correct Answer: M Explanation/Reference: QUESTION 20 You are developing a database application by using Microsoft SQL Server 2012. You have a query that runs slower than expected. You need to capture execution plans that will include detailed information on missing indexes recommended by the query optimizer. What should you do? A. Add a HASH hint to the query. B. Add a LOOP hint to the query. C. Add a FORCESEEK hint to the query. D. Add an INCLUDE clause to the index. E. Add a FORCESCAN hint to the Attach query. F. Add a columnstore index to cover the query. G. Enable the optimize for ad hoc workloads option. H. Cover the unique clustered index with a columnstore index. I. Include a SET FORCEPLAN ON statement before you run the query. J. Include a SET STATISTICS PROFILE ON statement before you run the query. K. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query. L. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query. M. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query. N. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query. Correct Answer: K Explanation/Reference: Download Ensurepass Latest 2013 MCSA 70-461 Real Exam Questions , help you to pass exam 100%.

Comments are closed.