考試前只需20-30小時的學習時間

在此之前，您可能需要數月甚至一年的時間來準備專業考試，但使用070-457考試指南，您只需要在考試前花費20-30小時進行複習即可。並且使用我們的學習材料，您將不再需要任何其他復習材料，因為我們的學習材料已包含所有重要的測試點。與此同時，070-457學習材料將為您提供全新的學習方法 - 讓您練習過程中的掌握知識。有許多人因閱讀書籍而感到頭疼，因為裡面有很多難以理解的知識。與此同時，教科書中那些無聊的描述常常讓人感到困倦。但是使用070-457測試題庫：Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1，你將不再有這些煩惱。

模擬考試功能

070-457學習資料的內容全部由行業專家根據多年來的考試大綱和行業發展趨勢編制而成。它與市場上問題庫的內容不重疊，避免了反复練習引起的疲勞。 070-457考試指南不是一個拼湊的測試題，而是有自己的系統和層次結構，可以使用戶有效地提高效率。我們的學習材料包含由考試專家根據不同科目的特點和範圍編寫的試題。模擬真實的Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1測試環境。測試結束後，系統還會給出總分和正確率。

購買前免費試用

070-457學習資料為消費者提供免費試用服務。如果您對我們的學習資料感興趣，您只需要進入我們的官方網站，您就可以免費下載並體驗我們的試用問題庫。通過試用，您將在070-457考試指南中獲得不同的學習經歷，您會發現我們所說的不是謊言，您將立即愛上我們的產品。作為您成功的關鍵，我們的學習材料可以為您帶來的好處不是靠金錢衡量的。 070-457測試題庫：Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1不僅可以幫助您通過考試，還可以幫助您掌握一套新的學習方法，並教您如何高效學習，我們的學習材料將引領您走向成功。

無論您是新人還是具有更多經驗老手，070-457學習材料都將是你們的最佳選擇，因為這是我們的專業人士根據多年來的考試大綱和行業趨勢的變化進行編輯的。 070-457測試題庫：Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1不僅可以幫助您提高學習效率，還可以幫助您將復習時間從長達幾個月縮短到一個月甚至兩三週，這樣您就可以使用最少的時間和精力獲得最大提升。

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最新的 MCSA 070-457 免費考試真題:

1. You generate a daily report according to the following query:

You need to improve the performance of the query. What should you do?

A) Drop the UDF and rewrite the report query as follows:
SELECT c.CustomerName
FROM Sales.Customer c
WHERE NOT EXISTS (
SELECT s.OrderDate
FROM Sales.SalesOrder
WHERE s.OrderDate > DATEADD(DAY, -90, GETDATE())
AND s.CustomerID = c.CustomerID)
B) Drop the UDF and rewrite the report query as follows:
SELECT DISTINCT c.CustomerName
FROM Sales.Customer c
INNER JOIN Sales.SalesOrder s
ON c.CustomerID = s.CustomerID
WHERE s.OrderDate < DATEADD(DAY, -90, GETDATE())
C) Drop the UDF and rewrite the report query as follows:
WITH cte(CustomerID, LastOrderDate) AS ( SELECT CustomerID, MAX(OrderDate) AS [LastOrderDate] FROM Sales.SalesOrder GROUP BY CustomerID
)
SELECT c.CustomerName
FROM cte
INNER JOIN Sales.Customer c
ON cte.CustomerID = c.CustomerID
WHERE cte.LastOrderDate < DATEADD(DAY, -90, GETDATE())
D) Rewrite the report query as follows:
SELECT c.CustomerName
FROM Sales.Customer c
WHERE NOT EXISTS (SELECT OrderDate FROM Sales.ufnGetRecentOrders(c.
CustomerID, 90))
Rewrite the UDF as follows:
CREATE FUNCTION Sales.ufnGetRecentOrders(@CustomerID int, @MaxAge datetime)
RETURNS TABLE AS RETURN (
SELECT OrderDate
FROM Sales.SalesOrder
WHERE s.CustomerID = @CustomerID
AND s.OrderDate > DATEADD(DAY, -@MaxAge, GETDATE())

2. 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) Add a default constraint to the computed column that implements hard-coded values.
B) Reference a user-defined function within the computed column.
C) Add a default constraint to the computed column that implements hard-coded CASE statements.
D) Create a BEFORE trigger that maintains the state of the computed column.

3. 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 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
B) 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
C) 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
D) 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

4. You administer a Microsoft SQL Server 2012 server that has SQL Server Integration Services (SSIS) installed. You plan to deploy new SSIS packages to the server. The SSIS packages use the Project Deployment Model together with parameters and Integration Services environment variables. You need to configure the SQL Server environment to support these packages. What should you do?

A) Install Data Quality Services.
B) Install Master Data services.
C) Create an Integration Services catalog.
D) Create SSIS configuration files for the packages.

5. You develop a Microsoft SQL Server 2012 database that contains a table named Customers. The Customers table has the following definition:

You need to create an audit record only when either the MobileNumber or HomeNumber column is updated. Which Transact-SQL query should you use?

A) CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF COLUMNS_CHANGED (HomeNumber, MobileNumber)
- - Create Audit Records
B) CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF COLUMNS_UPDATED (HomeNumber, MobileNumber)
- - Create Audit Records
C) CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF UPDATE (HomeNumber) OR UPDATE (MobileNumber)
- - Create Audit Records
D) CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF EXISTS( SELECT HomeNumber FROM inserted) OR EXISTS (SELECT MobileNumber FROM inserted)
- - Create Audit Records

問題與答案：