4 02 2015

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Vendor: Microsoft
Exam Code: 70-461
Exam Name: Querying Microsoft SQL Server 2012

QUESTION 21
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.

Answer: F
Explanation:
http://msdn.microsoft.com/en-us/library/ms188362.aspx

QUESTION 22
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?

Answer: C
Explanation:
http://msdn.microsoft.com/en-us/library/hh213505.aspx

QUESTION 23
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.

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));

Answer: D

QUESTION 24
You develop a Microsoft SQL Server 2012 database that contains tables named Employee and Person. The tables have the following definitions:

You create a view named VwEmployee as shown in the following Transact-SQL statement.

Users are able to use single INSERT statements or INSERT…SELECT statements into this view. You need to ensure that users are able to use a single statement to insert records into both Employee and Person tables by using the VwEmployee view.
Which Transact-SQL statement should you use?

A.    CREATE TRIGGER TrgVwEmployee
ON VwEmployee
FOR INSERT
AS
BEGIN
INSERT INTO Person(Id, FirstName, LastName)
SELECT Id, FirstName, LastName, FROM inserted
INSERT INTO Employee(PersonId, EmployeeNumber)
SELECT Id, EmployeeNumber FROM inserted
END
B.    CREATE TRIGGER TrgVwEmployee
ON VwEmployee
INSTEAD OF INSERT
AS
BEGIN
INSERT INTO Person(Id, FirstName, LastName)
SELECT Id, FirstName, LastName, FROM inserted
INSERT INTO Employee(PersonId, EmployeeNumber)
SELECT Id, EmployeeNumber FROM inserted
END
C.    CREATE TRIGGER TrgVwEmployee
ON VwEmployee
INSTEAD OF INSERT
AS
BEGIN
DECLARE @ID INT, @FirstName NVARCHAR(25), @LastName NVARCHAR(25), @PersonID INT, @EmployeeNumber NVARCHAR(15)
SELECT @ID = ID, @FirstName = FirstName, @LastName = LastName, @EmployeeNumber = EmployeeNumber
FROM inserted
INSERT INTO Person(Id, FirstName, LastName)
VALUES(@ID, @FirstName, @LastName)
INSERT INTO Employee(PersonID, EmployeeNumber)
VALUES(@PersonID, @EmployeeNumber
End
D.    CREATE TRIGGER TrgVwEmployee
ON VwEmployee
INSTEAD OF INSERT
AS
BEGIN
INSERT INTO Person(Id, FirstName, LastName)
SELECT Id, FirstName, LastName FROM VwEmployee
INSERT INTO Employee(PersonID, EmployeeNumber)
SELECT Id, EmployeeNumber FROM VwEmployee
End

Answer: B

QUESTION 25
You develop a Microsoft SQL Server 2012 database that contains a table named Products. The Products table has the following definition: You need to create an audit record only when either the RetailPrice or WholeSalePrice column is updated. Which Transact-SQL query should you use?

A.    CREATE TRIGGER TrgPriceChange ON Products FOR UPDATE AS
IF CCLUMNS_CHANGED(RetailPrice, WholesalePrice)
– – Create Audit Records
B.    CREATE TRIGGER TrgPriceChange ON Products FOR UPDATE AS
IF EXISTS(SELECT RetailPrice from inserted) OR
EXISTS (SELECT WholeSalePnce FROM inserted)
– – Create Audit Records
C.    CREATE TRIGGER TrgPriceChange ON Products FOR UPDATE AS
IF COLUMNS_UPDATED(RetailPrice, WholesalePrice)
– – Create Audit Records
D.    CREATE TRIGGER TrgPriceChange ON Products FOR UPDATE AS
IF UPDATE(RetailPrice) OR UPDATE(WholeSalePrice)
– – Create Audit Records

Answer: D
Explanation:
http://msdn.microsoft.com/en-us/library/bb510663.aspx
http://msdn.microsoft.com/en-us/library/ms186329.aspx

QUESTION 26
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:

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.

Answer: D
Explanation:
http://msdn.microsoft.com/en-us/library/ms187956.aspx

QUESTION 27
A table named Profits stores the total profit made each year within a territory. The Profits table has columns named Territory, Year, and Profit. You need to create a report that displays the profits made by each territory for each year and its previous year. Which Transact-SQL query should you use?

A.    SELECT Territory, Year, Profit,
LEAD(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) ASPrevProfit
FROM Profits
B.    SELECT Territory, Year, Profit,
LAG(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) ASPrevProfit
FROM Profits
C.    SELECT Territory, Year, Profit,
LAG(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) ASPrevProfit
FROM Profits
D.    SELECT Territory, Year, Profit,
LEAD(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) ASPrevProfit
FROM Profits

Answer: C
Explanation:
http://msdn.microsoft.com/en-us/library/hh231256.aspx
http://msdn.microsoft.com/en-us/library/hh213125.aspx

QUESTION 28
You use Microsoft SQL Server 2012 database to develop a shopping cart application. You need to rotate the unique values of the ProductName field of a table-valued expression into multiple columns in the output. Which Transact-SQL operator should you use?

A.    CROSS JOIN
B.    CROSS APPLY
C.    PIVOT
D.    UNPIVOT

Answer: C
Explanation:
http://technet.microsoft.com/en-us/library/ms177634.aspx

QUESTION 29
You administer a Microsoft SQL Server database that supports a shopping application. You need to retrieve a list of customers who live in territories that do not have a sales person. Which Transact- SQL query or queries should you use? (Each correct answer presents a complete solution. Choose all that apply.)

A.    SELECT CustomerID FROM Customer WHERE TerritoryID <> SOME(SELECT TerritoryID
FROM Salesperson)
B.    SELECT CustomerID FROM Customer WHERE TerritoryID <> ALL(SELECT TerritoryID
FROM Salesperson)
C.    SELECT CustomerID FROM Customer WHERE TerritoryID <> ANY(SELECT TerritoryID
FROM Salesperson)
D.    SELECT CustomerID FROM Customer WHERE TerritoryID NOT IN(SELECT TerritoryID
FROM Salesperson)

Answer: BD

QUESTION 30
You support a database structure shown in the exhibit. (Click the Exhibit button.)

You need to write a query that displays the following details:
– Total sales made by sales people, year, city, and country
– Sub totals only at the city level and country level
– A grand total of the sales amount
Which Transact-SQL query should you use?

A.    SELECT SalesPerson.Name, Country,
City,DatePart(yyyy,
SaleDate) AS Year,
Sum(Amount) AS TotalFROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID =
SalesPerson.SalesPersonID GROUP BY GROUPING
SETS((SalesPerson.Name, Country, City,
DatePart(yyyy,SaleDate)), (Country, City), (Country), ())
B.    SELECT SalesPerson.Name, Country,
City,DatePart(yyyy,
SaleDate) AS Year,
Sum(Amount) AS TotalFROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID =
SalesPerson.SalesPersonID GROUP BY
CUBE(SalesPerson.Name, Country, City,
DatePart(yyyy, SaleDate))
C.    SELECT SalesPerson.Name, Country,
City,DatePart(yyyy,
SaleDate) AS Year,
Sum(Amount) AS TotalFROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID =
SalesPerson.SalesPersonID GROUP BY
CUBE(SalesPerson.Name, DatePart(yyyy, SaleDate), City, Country)
D.    SELECT SalesPerson.Name, Country,
City,DatePart(yyyy,
SaleDate) AS Year,
Sum(Amount) AS TotalFROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID =
SalesPerson.SalesPersonID GROUP BY
ROLLUP(SalesPerson.Name, DatePart(yyyy, SaleDate), City, Country)

Answer: A
Explanation:
http://www.grapefruitmoon.net/diving-into-t-sql-grouping-sets/
http://msdn.microsoft.com/en-us/library/ms177673.aspx

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