Free 70-461 Querying SQL Server Practice Test

1. 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?

2. 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 preceding year.

Which Transact-SQL query should you use?

3. 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?

4. You are writing a set of queries against a FILESTREAM-enabled database.

You create a stored procedure that will update multiple tables within a transaction.

You need to ensure that if the stored procedure raises a runtime error, the entire transaction is terminated and rolled back.

Which Transact-SQL statement should you include at the beginning of the stored procedure?

5. 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?

6. You administer a Microsoft SQL Server 2012 database named ContosoDb.

Tables are defined as shown in the exhibit. (Click the Exhibit button.)

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?

7. You administer a Microsoft SQL Server 2012 database named ContosoDb.

Tables are defined as shown in the exhibit. (Click the Exhibit button.)

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.

<CUSTOMERS Name="Customer A" Country="Australia">

<ORDERS OrderID="1" OrderDate="2001-01-01" Amount="3400.00" />

<ORDERS OrderID="2" OrderDate="2002-01-01" Amount="4300.00" />

</CUSTOMERS>

Which Transact-SQL query should you use?

8. You administer a Microsoft SQL Server 2012 database named ContosoDb.

Tables are defined as shown in the exhibit. (Click the Exhibit button.)

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?

9. You develop a Microsoft SQL Server 2012 server database that supports an application.

The application contains a table that has the following definition:

CREATE TABLE Inventory (

ItemID int NOT NULL PRIMARY KEY,

ItemsInStore int NOT NULL,

ItemsInWarehouse int NOT NULL)

You need to create a computed column that returns the sum total of the ItemsInStore and ItemsInWarehouse values for each row.

The new column is expected to be queried heavily, and you need to be able to index the column.

Which Transact-SQL statement should you use?

10. 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?

11. 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?

12. 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?

13. You are a database developer of a Microsoft SQL Server 2012 database.

The database contains a table named Customers that has the following definition:

You need to ensure that the CustomerId column in the Orders table contains only values that exist in the CustomerId column of the Customer table.

Which Transact-SQL statement should you use?

14. You have three tables that contain data for dentists, psychiatrists, and physicians. You create a view that is used to look up their email addresses and phone numbers.

The view has the following definition:

You need to ensure that users can update only the phone numbers and email addresses by using this view.

What should you do?

15. 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?

16. Your database contains tables named Products and ProductsPriceLog. The Products table contains columns named ProductCode and Price. The ProductsPriceLog table contains columns named ProductCode, OldPrice, and NewPrice.

The ProductsPriceLog table stores the previous price in the OldPrice column and the new price in the NewPrice column.

You need to increase the values in the Price column of all products in the Products table by 5 percent. You also need to log the changes to the ProductsPriceLog table.

Which Transact-SQL query should you use?

17. You are developing a database application by using Microsoft SQL Server 2012.

An application that uses a database begins to run slowly.

Your investigation shows the root cause is a query against a read-only table that has a clustered index.

The query returns the following six columns:

• One column in its WHERE clause contained in a non-clustered index

• Four additional columns

• One COUNT (*) column based on a grouping of the four additional columns

You need to optimize the statement.

What should you do?

18. You administer a Microsoft SQL Server 2012 database named ContosoDb.

Tables are defined as shown in the exhibit. (Click the Exhibit button.)

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?

19. You administer a Microsoft SQL Server 2012 database named ContosoDb.

Tables are defined as shown in the exhibit. (Click the Exhibit button.)

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?

20. You use Microsoft SQL Server 2012 to write code for a transaction that contains several statements.

There is high contention between readers and writers on several tables used by your transaction.

You need to minimize the use of the tempdb space. You also need to prevent reading queries from blocking writing queries.

Which isolation level should you use?