You administer a Microsoft SQL Server 2012 database. The database contains a table named Employee. Part of the Employee table is shown in the exhibit. (Click the Exhibit button.)


Confidential information about the employees is stored in a separate table named EmployeeData. One record exists within EmployeeData for each record in the Employee table. You need to assign the appropriate constraints and table properties to ensure data integrity and visibility. On which column in the Employee table should you a create a unique constraint?

• A. FirstName
• B. LastName
• C. DateHired
• D. MiddleName
• E. ReportsToID
• F. EmployeeNum
• G. EmployeelD
• H. DepartmentID
• I. JobTitle

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 a large amount of memory is consumed by single-use dynamic queries. You need to reduce procedure cache usage from these statements without creating any additional indexes. What should you do?

• A. Add a HASH hint to the query.
• B. Add a FORCESEEK hint to the query.
• C. Add a columnstore index to cover the query.
• D. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.
• E. Add an INCLUDE clause to the index.
• F. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.
• G. Add a LOOP hint to the query.
• H. Cover the unique clustered index with a columnstore index.
• I. Enable the optimize for ad hoc workloads option.
• 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 FORCEPLAN ON statement before you run the query.
• M. Add a FORCESCAN hint to the Attach query.
• N. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.

You develop a Microsoft SQL Server 2012 database that has two tables named SavingAccounts and LoanAccounts. Both tables have a column named AccountNumber of the nvarchar data type. You use a third table named Transactions that has columns named TransactionId, AccountNumber, Amount, and TransactionDate. You need to ensure that when multiple records are inserted in the Transactions table, only the records that have a valid AccountNumber in the SavingAccounts or LoanAccounts are inserted. Which Transact-SQL statement should you use?

• A. CREATE TRIGGER TrgValidateAccountNumber ON Transactions FOR INSERT AS BEGIN
  IF EXISTS (
  SELECT AccountNumber FROM inserted EXCEPT
  (SELECT AccountNumber FROM LoanAccounts
  UNION SELECT AccountNumber FROM SavingAccounts))
  BEGIN
  ROLLBACK TRAN
  END
  END
• B. CREATE TRIGGER TrgValidateAccountNumber ON Transactions INSTEAD OF INSERT AS BEGIN
  IF EXISTS (
  SELECT AccountNumber FROM inserted EXCEPT
  (SELECT AccountNumber FROM LoanAccounts
  UNION SELECT AccountNumber FROM SavingAccounts))
  BEGIN
  ROLLBACK TRAN
  END
  END
• C. CREATE TRIGGER TrgValidateAccountNumber ON Transactions INSTEAD OF INSERT AS BEGIN
  INSERT INTO Transactions SELECT TransactionID,AccountNumber,Amount,TransactionDate FROM inserted WHERE AccountNumber IN (SELECT AccountNumber FROM LoanAccounts UNION SELECT AccountNumber FROM SavingAccounts)) END
• D. CREATE TRIGGER TrgValidateAccountNumber ON Transactions FOR INSERT AS BEGIN
  INSERT INTO Transactions SELECT TransactionID,AccountNumber,Amount,TransactionDate FROM inserted WHERE AccountNumber IN (SELECT AccountNumber FROM LoanAccounts UNION SELECT AccountNumber FROM SavingAccounts)) END

You develop a Microsoft SQL Server 2012 database. You need to create a batch process that meets the following requirements:
Returns a result set based on supplied parameters.
Enables the returned result set to perform a join with a table.
Which object should you use?

• A. Stored procedure
• B. Inline user-defined function
• C. Scalar user-defined function
• D. Table-valued user-defined function

You administer a Microsoft SQL Server 2012 server. You plan to deploy new features to an application. You need to evaluate existing and potential clustered and non-clustered indexes that will improve performance. What should you do?

• A. Query the sys.dm_db_index_usage_stats DMV.
• B. Query the sys.dm_db_missing_index_columns DMV.
• C. Query the sys.dm_db_missing_index_details DMV.
• D. Use the Database Engine Tuning Advisor.