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MCSA 70-461 資料は問題集と解答が含まれています。

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70-461 PDF DEMO:

QUESTION NO: 1
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
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
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
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
Answer: C

QUESTION NO: 2
You administer a Microsoft SQL Server database named Sales. The database is 3 terabytes in size. The Sales database is configured as shown in the following table.
You discover that Sales_2.ndf is corrupt. You need to recover the corrupted data in the minimum amount of time. What should you do?
A. Perform a filegroup restore.
B. Perform a transaction log restore.
C. Perform a file restore.
D. Perform a restore from a full backup.
Answer: C

QUESTION NO: 3
You develop a Microsoft SQL Server database for an order processing system that contains a table named OrderCountSummary, as shown in the first exhibit. (Click the Exhibit tab.)
The table stores the names of vendors and the number of orders submitted by each vendor for each food category: Dairy, Meat, Poultry, Seafood, and Vegetarian.
You need to generate a report that displays the total number of orders placed for each food category, as shown in the following table.
Which four Transact-SQL segments should you use to develop the solution? To answer, move the appropriate Transact-SQL segments from the list of Transact-SQL segments to the answer area and arrange them in the correct order.
Answer:
Explanation:
You can use the PIVOT and UNPIVOT relational operators to change a table-valued expression into another table. PIVOT rotates a table-valued expression by turning the unique values from one column in the expression into multiple columns in the output, and performs aggregations where they are required on any remaining column values that are wanted in the final output. UNPIVOT performs the opposite operation to PIVOT by rotating columns of a table-valued expression into column values.
References:
https://docs.microsoft.com/en-us/sql/t-sql/queries/from-using-pivot-and-unpivot

QUESTION NO: 4
You create a stored procedure that will update multiple tables within a transaction.
You need to ensure that if the stored procedure raises a run-time 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 XACT_ABORT ON
B. SET ARITHABORT OFF
C. TRY
D. SET ARITHABORT ON
E. BEGIN
F. SET XACT_ABORT OFF
Answer: A
Reference:
http://msdn.microsoft.com/en-us/library/ms190306.aspx
http://msdn.microsoft.com/en-us/library/ms188792.aspx

QUESTION NO: 5
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid- year marks for students. The table has marks obtained by 50 students for various subjects.
You need to ensure that the following requirements are met:
* Students must be ranked based on their average marks.
* If one or more students have the same average, the same rank must be given to these students.
* Consecutive ranks must be skipped when the same rank is assigned.
Which Transact-SQL query should you use?
A. SELECT Id, Name, Marks,
DENSE_RANK() OVER(ORDER BY Marks DESC) AS Rank
FROM StudentMarks
B. SELECT StudentCode as Code,
NTILE(2) OVER(ORDER BY AVG (Marks) DESC) AS Value
FROM StudentMarks
GROUP BY StudentCode
C. SELECT StudentCode AS Code,Marks AS Value FROM (
SELECT StudentCode, Marks AS Marks,
RANK() OVER(PARTITION BY SubjectCode ORDER BY Marks ASC) AS Rank
FROM StudentMarks) tmp
WHERE Rank = 1
D. SELECT StudentCode as Code,
RANK() OVER(ORDER BY AVG (Marks) DESC) AS Value
FROM StudentMarks
GROUP BY StudentCode
E. SELECT StudentCode AS Code,Marks AS Value FROM (
SELECT StudentCode, Marks AS Marks,
RANK() OVER(PARTITION BY SubjectCode ORDER BY Marks DESC) AS Rank
FROM StudentMarks) tmp
WHERE Rank = 1
F. SELECT StudentCode AS Code,Marks AS Value FROM (
SELECT StudentCode, Marks AS Marks,
RANXO OVER(PARTITION BY StudentCode ORDER BY Marks DESC) AS Rank
FROM StudentMarks) tmp
WHERE Rank = 1
G. SELECT StudentCode as Code,
DENSE_RANK() OVER(ORDER BY AVG (Marks) DESC) AS Value
FROM StudentMarks
GROUP BY StudentCode
H. SELECT StudentCode AS Code,Marks AS Value FROM (
SELECT StudentCode, Marks AS Marks,
RANK() OVER(PARTITION BY StudentCode ORDER BY Marks ASC) AS Rank
FROM StudentMarks) tmp
WHERE Rank = 1
Answer: D
Reference:
http://msdn.microsoft.com/en-us/library/ms189798.aspx

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Updated: May 28, 2022