Microsoft 70-457 Latest Important Questions with Answers and Explanation Shared By Braindump2go (41-50)

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Vendor: Microsoft
Exam Code: 70-457
Exam Name: Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1 Exam

QUESTION 41
You have a database that contains the tables as shown in the exhibit.

You have the following query:

You need to recreate the query to meet the following requirements:
- Reference columns by using one-part names only.
- Sort aggregates by SalesTerritoryID, and then by ProductID.
- Order the results in descending order from SalesTerritoryID to ProductID.
- The solution must use the existing SELECT clause and FROM clause.
Which code segment should you use? To answer, type the correct code in the answer area.
Answer:
SELECT SalesTerritoryID,
ProductID,
AVG(UnitPrice),
MAX(OrderQty),
MAX(DiscountAmount)
FROM Sales.Details
GROUP BY SalesTerritoryID , ProductID
ORDER BY SalesTerritoryID DESC, ProductID DESC

QUESTION 42
You have an XML schema collection named Sales.InvoiceSchema.
You need to declare a variable of the XML type named XML1.
The solution must ensure that XML1 is validated by using Sales.InvoiceSchema.
Which code segment should you use? To answer, type the correct code in the answer area.
Answer:
DECLARE @XML1 XML(Sales.InvoiceSchema)
Explanation:
http://msdn.microsoft.com/en-us/library/ms176009.aspx

QUESTION 43
You have a database 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.
- Return the most recent orders first.
- 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.
- Return the order date in a column named MostRecentOrderDate that appears as the last column in the report.
The solution must support the ANSI SQL-99 standard.
Which code segment should you use? To answer, type the correct code in the answer area.
Answer:
SELECT C.LastName, MAX(O.OrderDate) AS MostRecentOrderDate
FROM Customers AS C INNER JOIN Orders AS O
ON C.CustomerID = O.CustomerID
GROUP BY C.LastName
ORDER BY O.OrderDate DESC

QUESTION 44
You have a database that contains the tables as shown in the exhibit. (Click the Exhibit button.)

You need to create a query that returns a list of products from Sales.ProductCatalog.
The solution must meet the following requirements:
- UnitPrice must be returned in descending order.
- The query must use two-part names to reference the table.
- The query must use the RANK function to calculate the results.
- The query must return the ranking of rows in a column named PriceRank.
- The list must display the columns in the order that they are defined in the table. PriceRank must appear last.
Which code segment should you use? To answer, type the correct code in the answer area.
Answer:
SELECT ProductCatalog.CatID, ProductCatalog.CatName, ProductCatalog.ProductID, ProductCatalog.ProdName, ProductCatalog.UnitPrice,
RANK() OVER (PARTITION BY ProductCatalog.UnitPrice ORDER BY ProductCatalog.UnitPrice DESC) AS PriceRank
FROM Sales.ProductCatalog
ORDER BY ProductCatalog.UnitPrice DESC

QUESTION 45
You have a database 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 Appl.
Usp_Customers must meet the following requirements:
- NOT use object delimiters.
- Minimize sorting and counting.
- Return only the last name of each customer in alphabetical order.
- Return only the number of rows specified by the @Count parameter.
The solution must NOT use BEGIN and END statements.
Which code segment should you use? To answer, type the correct code in the answer area.
Answer:
CREATE PROCEDURE usp_Customers @Count int
AS
SELECT TOP(@Count) Customers.LastName
FROM Customers
ORDER BY Customers.LastName

QUESTION 46
You use a Microsoft SQL Server 2012 database that contains a table named BlogEntry that has the following columns:

Id is the Primary Key.
You need to append the "This is in a draft stage" string to the Summary column of the recent 10 entries based on the values in EntryDateTime.
Which Transact-SQL statement should you use?

A.    UPDATE TOP (10) BlogEntry
SET Summary.WRITE(N' This is in a draft stage', NULL, 0)
B.    UPDATE BlogEntry
SET Summary - CAST(N' This is in a draft stage' as nvarchar(max))
WHERE Id IN (SELECT TOP (10) Id
FROM B1ogEntry ORDER BY EntryDateTime DESC)
C.    UPDATE BlogEntry SET Summary.WRITE(N' This is in a draft stage', NULL, 0)
FROM (SELECT TOP (10)
Id FROM BlogEntry ORDER BY EntryDateTime DESC)
AS s WHERE BlogEntry.Id = s.ID
D.    UPDATE BlogEntry
SET Summary.WRITE(N' This is in a draft stage', 0, 0)
WHERE Id IN (SELECT TOP (10)
Id FROM BlogEntry ORDER BY EntryDateTime DESC)

Answer: B

QUESTION 47
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.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: A
Explanation:
http://msdn.microsoft.com/en-us/library/ms190193.aspx
http://msdn.microsoft.com/en-us/library/ms188790.aspx

QUESTION 48
You use Microsoft SQL Server 2012 to create a stored procedure as shown in the following code segment. (Line numbers are included for reference only.)

The procedure can be called within other transactions.
You need to ensure that when the DELETE statement from the HumanResourcesJobCandidate table succeeds, the modification is retained even if the insert into the Audit.Log table fails.
Which code segment should you add to line 14?

A.    IF @@TRANCOUNT = 0
B.    IF (XACT_STATE ( ) ) = 0
C.    IF (XACT_STATE ( ) ) = 1
D.    IF @@TRANCOUNT = l

Answer: C
Explanation:
http://msdn.microsoft.com/en-us/library/ms189797.aspx
http://msdn.microsoft.com/en-us/library/ms187967.aspx

QUESTION 49
You develop a Microsoft SQL Server 2012 database.
You create a view from the Orders and OrderDetails tables by using the following definition.

You need to ensure that users are able to modify data by using the view.
What should you do?

A.    Create an AFTER trigger on the view.
B.    Modify the view to use the WITH VIEW_METADATA clause.
C.    Create an INSTEAD OF trigger on the view.
D.    Modify the view to an indexed view.

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

QUESTION 50
You use Microsoft SQL Server 2012 to develop a database application.
Your application sends data to an NVARCHAR(MAX) variable named @var.
You need to write a Transact-SQL statement that will find out the success of a cast to a decimal (36,9).
Which code segment should you use?

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: D
Explanation:
http://msdn.microsoft.com/en-us/library/hh213126.aspx

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