70-461 Exam
Examples of exam 70 461
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Q1. DRAG DROP
You develop a database application for a university. You need to create a view that will be indexed that meets the following requirements:
. Displays the details of only students from Canada.
. Allows insertion of details of only students from Canada.
Which four Transact-SQL statements should you use? (To answer, move the appropriate SQL statements from the list of statements to the answer area and arrange them in the correct order.)
Answer:
Q2. You use Microsoft SQL Server 2012 to develop a database application.
You create a stored procedure named DeleteJobCandidate.
You need to ensure that if DeleteJobCandidate encounters an error, the execution of the stored procedure reports the error number.
Which Transact-SQL statement should you use?
A. DECLARE @ErrorVar INT;
DECLARE @RowCountVar INT;
EXEC DeleteJobCandidate
SELECT @ErrorVar = @@ERROR, @RowCountVar = @@ROWCOUNT;
IF (@ErrorVar <> 0)
PRINT N'Error = ' + CAST(@@ErrorVar AS NVARCHAR(8)) +
N', Rows Deleted = ' + CAST(@@RowCountVar AS NVARCHAR(8));
GO
B. DECLARE @ErrorVar INT;
DECLARE @RowCountVar INT;
EXEC DeleteJobCandidate
SELECT @ErrorVar = ERROR_STATE(), @RowCountVar = @@ROWCOUNT;
IF (@ErrorVar <> 0)
PRINT N'Error = ' + CAST(ERRORSTATE() AS NVARCHAR(8)) +
N', Rows Deleted = ' + CAST(@@RowCountVar AS NVARCHAR(8));
GO
C. EXEC DeleteJobCandidate
IF (ERROR_STATE() != 0)
PRINT N'Error = ' + CAST(@@ERROR AS NVARCHAR(8)) +
N', Rows Deleted = ' + CAST(@@ROWCOUNT AS NVARCHAR(8));
GO
D. EXEC DeleteJobCandidate
PRINT N'Error = ' + CAST(@@ERROR AS NVARCHAR(8)) +
N', Rows Deleted = ' + CAST(@@ROWCOUNT AS NVARCHAR(8));
GO
Answer: A
Q3. You are writing a set of queries against a FILESTREAM-enabled database.
You create a stored procedure that will update multiple tables within a transaction.
You need to ensure that if the stored procedure raises a runtime error, the entire
transaction is terminated and rolled back.
Which Transact-SQL statement should you include at the beginning of the stored
procedure?
A. SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
B. SET XACT_ABORT OFF
C. SET TRANSACTION ISOLATION LEVEL SNAPSHOT
D. SET IMPLICIT_TRANSACTIONS ON
E. SET XACT_ABORT ON
F. SET IMPLICIT TRANSACTIONS OFF
Answer: E
Q4. Your database contains a table named Purchases. The table includes a DATETIME column named PurchaseTime that stores the date and time each purchase is made. There is a non-clustered index on the PurchaseTime column.
The business team wants a report that displays the total number of purchases made 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 Purchases
WHERE PurchaseTime = CONVERT(DATE, GETDATE())
B. SELECT COUNT(*)
FROM Purchases
WHERE PurchaseTime = GETDATE()
C. SELECT COUNT(*)
FROM Purchases
WHERE CONVERT(VARCHAR, PurchaseTime, 112) = CONVERT(VARCHAR,
GETDATE(), 112)
D. SELECT COUNT(*)
FROM Purchases
WHERE PurchaseTime >= CONVERT(DATE, GETDATE())
AND PurchaseTime < DATEADD(DAY, 1, CONVERT(DATE, GETDATE()))
Answer: D
Explanation:
Two answers will return the correct results (the "WHERE CONVERT..." and "WHERE ... AND ... " answers). The correct answer for Microsoft would be the answer that is most "efficient". Anybody have a clue as to which is most efficient? In the execution plan, the one that I've selected as the correct answer is the query with the shortest duration. Also, the query answer with "WHERE CONVERT..." threw warnings in the execution plan...something about affecting CardinalityEstimate and SeekPlan.
I also found this article, which leads me to believe that I have the correct Answer: http://technet.microsoft.com/en-us/library/ms181034.aspx
Q5. CORRECT TEXT
You have a database named Sales that contains the tables shown in the exhibit. (Click the Exhibit button).
You need to create a query for a report. The query must meet the following requirements:
NOT use object delimiters.
Use the first initial of the table as an alias.
Return the most recent order date for each customer.
Retrieve the last name of the person who placed the order.
The solution must support the ANSI SQL-99 standard.
Part of the correct T-SQL statement has been provided in the answer area. Provide the complete code.
Answer:
78. 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 the root cause is a query against a frequently updated table that has a clustered index. The query returns four columns: three columns in its WHERE clause contained in a non-clustered index and one additional column.
You need to optimize the statement.
What should you do?
A. Add a HASH hint lo 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 FORCESCAN hint to the Attach query.
G. Add a columnstore index to cover the query.
H. Enable the optimize for ad hoc workloads option.
I. Cover the unique clustered index with a columnstore index. 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.
Answer: C
Q6. CORRECT TEXT
You have a database named Sales that contains the tables shown in the exhibit. (Click the Exhibit button.)
You have an application named Appl. You have a parameter named @Count that uses the
int data type. App1 is configured to pass @Count to a stored procedure.
You need to create a stored procedure named usp_Customers for App1 that returns only
the number of rows specified by the @Count parameter.
The solution must NOT use BEGIN and END statements.
Part of the correct T-SQL statement has been provided in the answer area. Provide the
complete code.
Answer:
Q7. 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.
Answer: K
Q8. You develop a Microsoft SQL Server 2012 database that contains tables named Customers and Orders. The tables are related by a column named CustomerId.
You need to create a query that meets the following requirements:
. Returns the CustomerName for all customers and the OrderDate for any orders that they have placed. . Results must not include customers who have not placed any orders.
Which Transact-SQL query should you use?
A. SELECT CustomerName, OrderDate FROM Customers LEFT OUTER JOIN Orders ON Customers.CuscomerlD = Orders.CustomerId
B. SELECT CustomerName, OrderDate FROM Customers RIGHT OUTER JOIN Orders ON Customers.CustomerID = Orders.CustomerId
C. SELECT CustomerName, OrderDate FROM Customers CROSS JOIN Orders ON Customers.CustomerId = Orders.CustomerId
D. SELECT CustomerName, OrderDate FROM Customers JOIN Orders ON Customers.CustomerId = Orders.CustomerId
Answer: D
Q9. CORRECT TEXT
You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.)
You deploy a new server that has SQL Server 2012 installed. You need to create a table named
Sales.OrderDetails on the new server. Sales.OrderDetails must meet the following requirements:
. Write the results to a disk.
. Contain a new column named LineItemTotal that stores the product of ListPrice and Quantity for each row.
. The code must NOT use any object delimiters.
The solution must ensure that LineItemTotal is stored as the last column in the table. Which code segment should you use?
To answer, type the correct code in the answer area.
Answer:
Q10. You use Microsoft SQL Server 2012 to develop a database application.
You need to implement a computed column that references a lookup table by using an INNER JOIN against another table.
What should you do?
A. Reference a user-defined function within the computed column.
B. Create a BEFORE trigger that maintains the state of the computed column.
C. Add a default constraint to the computed column that implements hard-coded values.
D. Add a default constraint to the computed column that implements hard-coded CASE statements.
Answer: A