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Question 1:

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

http://technet.microsoft.com/en-us/libr ary/ms181034.aspx


Question 2:

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

Correct Answer: C

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


Question 3:

You develop a Microsoft SQL Server 2012 database. The database is used by two web applications that access a table named Products. You want to create an object that will prevent the applications from accessing the table directly while still providing access to the required data. You need to ensure that the following requirements are met:

Future modifications to the table definition will not affect the applications\’ ability to access data.

The new object can accommodate data retrieval and data modification.

You need to achieve this goal by using the minimum amount of changes to the applications. What should you create for each application?

A. Synonyms

B. Common table expressions

C. Views

D. Temporary tables

Correct Answer: C

http://msdn.microsoft.com/en-us/library/ms190174.aspx


Question 4:

You administer a Microsoft SQL Server 2012 database named ContosoDb. Tables are defined as shown in the exhibit.

You need to display rows from the Orders table for the Customers row having the CustomerId value set to 1 in the following XML format.

Which Transact-SQL query should you use?

A. SELECT OrderId, OrderDate, Amount, Name, Country FROM Orders INNER JOIN Customers ON Orders.CustomerId = Customers.CustomerId WHERE Customers.CustomerId = 1 FOR XML RAW

B. SELECT OrderId, OrderDate, Amount, Name, Country FROM Orders INNER JOIN Customers ON Orders.CustomerId = Customers.CustomerId WHERE Customers.CustomerId = 1 FOR XML RAW, ELEMENTS

C. SELECT OrderId, OrderDate, Amount, Name, Country FROM Orders INNER JOIN Customers ON Orders.CustomerId = Customers.CustomerId WHERE Customers.CustomerId = 1 FOR XML AUTO

D. SELECT OrderId, OrderDate, Amount, Name, Country FROM Orders INNER JOIN Customers ON Orders.CustomerId – Customers.CustomerId WHERE Customers.CustomerId= 1 FOR XML AUTO, ELEMENTS

E. SELECT Name, Country, OrderId, OrderDate, Amount FROM Orders INNER JOIN Customers ON Orders.CustomerId= Customers.CustomerId WHERE Customers.CustomerId= 1 FOR XML AUTO

F. SELECT Name, Country, Orderld, OrderDate, Amount FROM Orders INNER JOIN Customers ON Orders.CustomerId= Customers.CustomerId WHERE Customers.CustomerId= 1 FOR XML AUTO, ELEMENTS

G. SELECT Name AS \’@Name\’, Country AS \’@Country\’, OrderId, OrderDate, Amount FROM Orders INNER JOIN Customers ON Orders.CustomerId= Customers.CustomerId WHERE Customers.CustomerId= 1 FOR XML PATH (\’Customers\’)

H. SELECT Name AS\’Customers/Name\’, Country AS \’Customers/Country\’, OrderId, OrderDate, Amount FROM Orders INNER JOIN Customers ON Orders.CustomerId= Customers.CustomerId WHERE Customers.CustomerId= 1 FOR XML PATH (\’Customers\’)

Correct Answer: E


Question 5:

You develop a Microsoft SQL Server 2012 database. You create a view that performs the following tasks:

-Joins 8 tables that contain up to 500,000 records each.

-Performs aggregations on 5 fields.

The view is frequently used in several reports.

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

A.

Convert the view into a table-valued function.

B.

Convert the view into a Common Table Expression (CTE).

C.

Convert the view into an indexed view.

D.

Convert the view into a stored procedure and retrieve the result from the stored procedure into a temporary table.

Correct Answer: C

http://msdn.microsoft.com/en-us/library/ms191432.aspx


70-461 PDF Dumps70-461 Study Guide70-461 Exam Questions

Question 6:

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. Reference a user-defined function within the computed column.

B. Create a BEFORE trigger that maintains the state of the computed column.

C. Add a default constraint to the computed column that implements hard-coded values.

D. Add a default constraint to the computed column that implements hard-coded CASE statements.

Correct Answer: A


Question 7:

You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly. You discover that a large amount of memory is consumed by single-use dynamic queries. You need to reduce procedure cache usage from these statements without creating any additional indexes. What should you do?

A. Add a HASH hint to the query.

B. Add a LOOP hint to the query.

C. Add a FORCESEEK hint to the query.

D. Add an INCLUDE clause to the index.

E. Add a FORCESCAN hint to the Attach query.

F. Add a columnstore index to cover the query.

G. Enable the optimize for ad hoc workloads option.

H. Cover the unique clustered index with a columnstore index.

I. Include a SET FORCEPLAN ON statement before you run the query.

J. Include a SET STATISTICS PROFILE ON statement before you run the query.

K. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.

L. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.

M. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.

N. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.

Correct Answer: G

http://msdn.microsoft.com/en-us/library/cc645587.aspx


Question 8:

Why is it important to use the appropriate type for attributes?

A. Because the type of your attribute enables you to control the formatting of the values

B. Because the type constrains the values to a certain domain of supported values

C. Because the type prevents duplicates

D. Because the type prevents NULLs

Correct Answer: B


Question 9:

You are designing a data warehouse that uses SQL Server 2012. You are preparing to update the contents of a fact table that contains a non-clustered columnstore index. You need to run an update statement against the table. What should you do first?

A. Pause the columnstore index.

B. Change the recovery model of the database to Bulk-logged.

C. Change the non-clustered columnstore index to be a clustered columnstore index.

D. Drop the columnstore index.

Correct Answer: D


Question 10:

You develop a database application. You create four tables. Each table stores different categories of products. You create a Primary Key field on each table. You need to ensure that the following requirements are met.

The fields must use the minimum amount of space.

The fields must be an incrementing series of values.

The values must be unique among the four tables. What should you do?

A.

Create a ROWVERSION column.

B.

Create a SEQUENCE object that uses the INTEGER data type.

C.

Use the INTEGER data type along with IDENTITY.

D.

Use the UNIQUHDENTTFIER data type along with NEWSEQUENTIALID().

E.

Create a TIMESTAMP column.

Correct Answer: B

It takes less space than the UNIQUEIDENTIFIER datatype (16Bytes) vs INT (4Bytes). It would be unique across whatever calls it, because a SEQUENCE is an independent object, getting its next value with the NEXT VALUE FOR SeqName,

defining a constraint on the PrimaryKey of all tables

as:

ALTER TABLE tname

ADD CONSTRAINT DFT_tname_cname

DEFAULT(NEXT VALUE FOR SeqName) FOR cname;


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