Latest Real 70-461 Tests Dumps and VCE Exam Questions 41-50

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QUESTION 41

Your database contains two tables named DomesticSalesOrders and InternationalSalesOrders. Both tables contain more than 100 million rows. Each table has a Primary Key column named SalesOrderId. The data in the two tables is distinct from one another. Business users want a report that includes aggregate information about the total number of global sales and total sales amounts. You need to ensure that your query executes in the minimum possible time. Which query should you use?

 

A.  SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount

    FROM (

      SELECT SalesOrderId, SalesAmount

      FROM DomesticSalesOrders

      UNION ALL

      SELECT SalesOrderId, SalesAmount

      FROM InternationalSalesOrders

      ) AS p

B.  SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount

    FROM (

      SELECT SalesOrderId, SalesAmount

      FROM DomesticSalesOrders

      UNION

      SELECT SalesOrderId, SalesAmount

      FROM InternationalSalesOrders

      ) AS p

C.  SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount

    FROM DomesticSalesOrders

    UNION

    SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount

    FROM InternationalSalesOrders

D.  SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount

    FROM DomesticSalesOrders

    UNION ALL

    SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount

FROM InternationalSalesOrders

 

Correct Answer: A

 

 

QUESTION 42

You are a database developer at an independent software vendor. You create stored procedures that contain proprietary code. You need to protect the code from being viewed by your customers. Which stored procedure option should you use?

 

A.      ENCRYPTBYKEY

B.      ENCRYPTION

C.      ENCRYPTBYPASSPHRASE

D.      ENCRYPTBYCERT

 

Correct Answer: B

 

 

QUESTION 43

You use a Microsoft SQL Server 2012 database. You want to create a table to store Microsoft Word documents. You need to ensure that the documents must only be accessible via Transact-SQL queries. Which Transact-SQL statement should you use?

 

A.  CREATE TABLE DocumentStore

    (

      [Id] INT NOT NULL PRIMARY KEY,

      [Document] VARBINARY(MAX) NULL

    )

    GO

B.  CREATE TABLE DocumentStore

    (

      [Id] hierarchyid,

      [Document] NVARCHAR NOT NULL

    )

    GO

C.  CREATE TABLE DocumentStore AS FileTable

D.  CREATE TABLE DocumentStore

    (

      [Id] [uniqueidentifier] ROWGUIDCOL NOT NULL UNIQUE,

      [Document] VARBINARY(MAX) FILESTREAM NULL

    )

    GO

 

Correct Answer: A

 

 

QUESTION 44

You develop a Microsoft SQL Server 2012 database that contains a heap named OrdersHistoncal.

You write the following Transact-SQL query:

 

INSERT INTO OrdersHistorical

SELECT * FROM CompletedOrders

 

You need to optimize transaction logging and locking for the statement. Which table hint should you use?

 

A.      HOLDLOCK

B.      ROWLOCK

C.      XLOCK

D.      UPDLOCK

E.       TABLOCK

 

Correct Answer: E

 

 

QUESTION 45

You use a Microsoft SQL Server 2012 database that contains two tables named SalesOrderHeader and SalesOrderDetail. The indexes on the tables are as shown in the exhibit.

 

clip_image002

 

You write the following Transact-SQL query:

 

clip_image003

 

You discover that the performance of the query is slow. Analysis of the query plan shows table scans where the estimated rows do not match the actual rows for SalesOrderHeader by using an unexpected index on SalesOrderDetail. You need to improve the performance of the query. What should you do?

 

A.      Use a FORCESCAN hint in the query.

B.      Add a clustered index on SalesOrderId in SalesOrderHeader.

C.      Use a FORCESEEK hint in the query.

D.      Update statistics on SalesOrderId on both tables.

 

Correct Answer: D

 

 

QUESTION 46

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()))

 

Correct Answer: D

 

 

QUESTION 47

You develop a database for a travel application. You need to design tables and other database objects. You need to store media files in several tables. Each media file is less than 1 MB in size. The media files will require fast access and will be retrieved frequently. What should you do?

 

A.      Use the CAST function.

B.      Use the DATE data type.

C.      Use the FORMAT function.

D.      Use an appropriate collation.

E.       Use a user-defined table type.

F.       Use the VARBINARY data type.

G.      Use the DATETIME data type.

H.      Use the DATETIME2 data type.

I.        Use the DATETIMEOFFSET data type.

J.        Use the TODATETIMEOFFSET function.

 

Correct Answer: F

 

 

QUESTION 48

You develop a database for a travel application. You need to design tables and other database objects. You create a view that displays the dates and times of the airline schedules on a report. You need to display dates and times in several international formats. What should you do?

 

A.      Use the CAST function.

B.      Use the DATE data type.

C.      Use the FORMAT function.

D.      Use an appropriate collation.

E.       Use a user-defined table type.

F.       Use the VARBINARY data type.

G.      Use the DATETIME data type.

H.      Use the DATETIME2 data type.

I.        Use the DATETIMEOFFSET data type.

J.        Use the TODATETIMEOFFSET function.

 

Correct Answer: C

 

 

QUESTION 49

You are a database developer of a Microsoft SQL Server 2012 database. You are designing a table that will store Customer data from different sources. The table will include a column that contains the CustomerID from the source system and a column that contains the SourceID. A sample of this data is as shown in the following table.

 

clip_image004

 

You need to ensure that the table has no duplicate CustomerID within a SourceID. You also need to ensure that the data in the table is in the order of SourceID and then CustomerID. Which Transact- SQL statement should you use?

 

A.  CREATE TABLE Customer

    (SourceID int NOT NULL IDENTITY,

    CustomerID int NOT NULL IDENTITY,

    CustomerName varchar(255) NOT NULL);

B.  CREATE TABLE Customer

    (SourceID int NOT NULL,

    CustomerID int NOT NULL PRIMARY KEY CLUSTERED,

    CustomerName varchar(255) NOT NULL);

C.  CREATE TABLE Customer

    (SourceID int NOT NULL PRIMARY KEY CLUSTERED,

    CustomerID int NOT NULL UNIQUE,

    CustomerName varchar(255) NOT NULL);

D.  CREATE TABLE Customer

    (SourceID int NOT NULL,

    CustomerID int NOT NULL,

    CustomerName varchar(255) NOT NULL,

    CONSTRAINT PK_Customer PRIMARY KEY CLUSTERED

    (SourceID, CustomerID));

 

Correct Answer: D

 

 

QUESTION 50

You have three tables that contain data for vendors, customers, and agents. You create a view that is used to look up telephone numbers for these companies. The view has the following definition:

 

clip_image005

 

You need to ensure that users can update only the phone numbers by using this view. What should you do?

 

A.      Alter the view. Use the EXPAND VIEWS query hint along with each SELECT statement.

B.      Drop the view. Re-create the view by using the SCHEMABINDING clause, and then create an index on the view.

C.      Create an AFTER UPDATE trigger on the view.

D.      Create an INSTEAD OF UPDATE trigger on the view.

 

Correct Answer: D

 

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