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Q:

You are the administrator of a SQL Server 2000 computer. The server contains a database named FinanceData that is used by a client/server application. Each employee has a SQL Server login that the application uses to access the server.Your company hires a new employee named Andrew. You create a SQL Server login named Andrew. You also create a database user named Andrew in the database and grant the database user full permissions in the database.Whenever Andrew runs the client/server application, he receives the following error message: "Invalid object name." Andrew also reports that he cannot access the database by using the application.You need to ensure that Andrew can use the application. Which Transact-SQL statement should you execute?

A) EXEC sp_defaultdb 'Andrew','FinanceData' B) GRANT ALL ON FinanceData TO Andrew
C) EXEC sp_addlogin 'Andrew' D) EXEC sp_grantdbaccess 'FinanceData','Andrew'GOsp_addrolemember 'db_datareader','Andrew'
 
Answer & Explanation Answer: A) EXEC sp_defaultdb 'Andrew','FinanceData'

Explanation:

Error 208 produces the message 'Invalid object name' and occurs when an object that does not exist in the current database is referenced. If the object exists in another database, we must use the USE statement to explicitly switch the context to the correct database or we must qualify the object name with the database name. A third option is to use the sp_defaultdb stored procedure. This stored procedure is used to change the default database for a login. When a client connects with SQL Server, the default database defined for its login becomes the current database without an explicit USE statement. The default database can be defined when the login is added with
sp_addlogin. When executing sp_addlogin the master database is the default database if a database is not specified. In this scenario a SQL Server 2000 login and a user account has been created for Andrew and he has been given database access and the required permissions.

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Q:

You are the database administrator for a financial services company. Employees enter data 24 hours a day into a SQL Server 2000 database. These employees report slower response times when new account information is gathered from branch offices and added to the database. You currently use the following BULK INSERT statement to add the account information.BULK INSERT finance.dbo.customersFROM 'd:bulkaccts143_10142000.txt'WITH DATAFILETYPE = 'char', FIELDTERMINATOR = 't', ROWTERMINATOR = 'n', TABLOCK You want to ensure that response times do not slow when new account information is added to the database. What should you do?

A) Add the BATCHSIZE option to the BULK INSERT statement, and then set the option equal to 10 percent of the number of rows to be loaded. B) Add the ROWS_PER_BATCH option to the BULK INSERT statement, and then set the option equal to 10 percent of the number of rows to be loaded.
C) Drop the indexes for the Customers table before the data load, and then re-create the indexes after the data load is complete. D) Remove the TABLOCK option from the BULK INSERT statement.
 
Answer & Explanation Answer: D) Remove the TABLOCK option from the BULK INSERT statement.

Explanation:

The TABLOCK hint increases the number of locks during the adding process. This is the reason why response time are slows down during this process. By removing the TABLOCK hint the default more granular row-level lock will be used. This would decrease the scope of the locks which would result in less waiting jobs and performance would improve.


Note: The BULK INSERT statement is used to copy a data file into a database table or view in a format specified by the user. The BULK INSERT statement accepts the TABLOCK hint, which allows the user to specify the locking behavior that the BULK INSERT statement should use. TABLOCK specifies that a bulk update table-level lock is taken for the duration of the bulk copy. If TABLOCK is not specified, the default uses row-level locks.

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Q:

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an
application. You use the ADO.NET Entity Framework to model entities. You write the following code segment. (Line numbers are included for reference only.)


01AdventureWorksEntities context = New AdventureWorksEntities
02
03var q = from c in context.Customers
04where c.City == "London"
05orderby c.CompanyName
06select c;


You need to ensure that the application meets the following requirements: "Compares the current values of unmodified properties with values returned from the data source". Marks the property as modified when the properties are not the same. Which code segment should you insert at line 02?

A) context.MergeOption = MergeOption.AppendOnly; B) context.MergeOption = MergeOption.PreserveChanges;
C) context.MergeOption = MergeOption.OverwriteChanges; D) context.MergeOption = MergeOption.NoTracking;
 
Answer & Explanation Answer: B) context.MergeOption = MergeOption.PreserveChanges;

Explanation:
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Q:

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application uses the ADO.NET Entity Framework to model entities. The application allows users to make changes to entities while disconnected from the central data store.

 

You need to ensure that when the user connects to the central data store and retrieves new data, the application meets the following requirements:

  • Changes made to the local data store in disconnected mode are preserved.
  • Entities that have already been loaded into the local data store, but have not been modified by the user, are updated with the latest data.

What should you do?

A) Call the query's Execute method by using the MergeOptions.AppendOnly option. B) Call the query's Execute method by using the MergeOptions.OverwriteChanges option.
C) Call the Refresh method of ObjectContext by using the RefreshMode.StoreWins option. D) Call the Refresh method of ObjectContext by using the RefreshMode.ClientWins method.
 
Answer & Explanation Answer: D) Call the Refresh method of ObjectContext by using the RefreshMode.ClientWins method.

Explanation:
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Q:

You create an ASP.NET application to provide corporate news and information to XYZ’s employees. The application is used by employees in New Zealand.


Default.aspx has a Web Form label control named currentDateLabel. The Page.Load event handler for Default.aspx included the following line of code:
currentDateLabel.Text = DateTime.Now.ToString(“D”)


You need to ensure that the data is displayed correctly for employees in New Zealand. What should you do?

A) In the Web.config file for the application, set the culture attribute of the globalization element to en-NZ. B) In the Web.config file for the application, set the uiCulture attribute of the globalization element to en-NZ.
C) In Visual Studio .NET, set the responseEncoding attribute in the page directive for Default.aspx to UTF-8. D) In Visual Studio .NET, save the Default.aspx page for both versions of the application by selecting Advanced Save Options from the File menu and selecting UTF-8.
 
Answer & Explanation Answer: A) In the Web.config file for the application, set the culture attribute of the globalization element to en-NZ.

Explanation:

The culture attribute of the globalization element specifies the default culture for processing incoming Web requests.

 

Incorrect Answers:

 

B: The uiculture attribute of the globalization specifies the default culture for processing locale dependent resource searches. It does not apply in this scenario.

 

C, D: The UTF8Encoding Class class encodes Unicode characters using UCS Transformation Format, 8-bit form (UTF-8). This encoding supports all Unicode character values and surrogates. However, it does not help in displaying data in New Zealand format.

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Q:

You develop an inventory management application called XYZManagement that will call a Microsoft SQL Server stored procedure named sp_GetDailyXYZSales. The stored procedure will run a query that returns your daily sales total as an output parameter. This total will be displayed to users in a message box.


Your application uses a SqlCommand object to run sp_GetDailyXYZSales. You write the
following code to call sp_GetDailyXYZSales:
SqlConnection cnn = new SqlConnection(myConnString);
SqlCommand cmd = new SqlCommand(“sp_GetDaily XYZ Sales”, cnn);
cmd.CommandType = CommandType.StoredProcedure;
SqlParameter prm = cmd.Parameters.Add(“@ItemTotal”,SqlDbType.Int);
prm.Direction = ParameterDirection.Output;
cnn.Open();
cmd.ExecuteNonQuery();


Now you must write additional code to access the output parameter. Which code segment should you use?

A) MessageBox.Show(?Total is: ? + cmd.Parameters[?@Output?].Value.ToString()); B) MessageBox.Show(?Total is: ? + cmd.Parameters[?@Output?].ToString());
C) MessageBox.Show(?Total is: ? + cmd.Parameters[?@ItemTotal? D) MessageBox.Show(?Total is: ? + cmd.Parameters[?@ItemTotal?
 
Answer & Explanation Answer: C) MessageBox.Show(?Total is: ? + cmd.Parameters[?@ItemTotal?

Explanation:

The @ItemTotal parameter is declared as an output parameter with SQL Server data type INT.We use the Value property of the SQLParameter class to retrieve the value of this parameter. We must also convert the INT value to a string value with the ToString method. We then supply this string to the MessageBox.Show method. 

 

Incorrect Answers


Option A, B:
The @ItemTotal parameter is the output parameter. Using @Output this way is incorrect. Output is a keyword and no variable named @Output has been declared.


Option D:
We must use the Value method to retrieve the value of the parameter..

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Q:

You develop an enterprise application, called XYZApplication that includes a Windows Form presentation layer, middle-tier components for business logic and data access, and a Microsoft SQL Server database.


You are in the process of creating a middle-tier component that will execute the data access routines in your application. When data is passed to this component, the component will call several SQL Server stored procedures to perform database updates. All of these procedure calls run under the control of a single transaction.


The code for the middle-tier component will implement the following objects:
SqlConnection cn = new SqlConnection();
SqlTransaction tr;


If two users try to update the same data concurrently, inconsistencies such as phantom reads will occur. You must now add code to your component to specify the highest possible level of protection against such inconsistencies.
Which code segment should you use?

A) tr = cn.BeginTransaction(?ReadCommitted?); B) tr = cn.BeginTransaction(IsolationLevel.ReadCommitted);
C) tr = cn.BeginTransaction(IsolationLevel.Serializable); D) tr = cn.BeginTransaction(?Serializable?);
 
Answer & Explanation Answer: C) tr = cn.BeginTransaction(IsolationLevel.Serializable);

Explanation:

Serializable is the highest isolation transaction level. It provide the highest possible level of protection against concurrent data errors. The correct syntax to begin a transaction with this transaction isolation level is: cn.BeginTransaction(IsolationLevel.Serializable)

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Q:

You use Visual Studio .NET to develop a Windows-based application that interacts with a Microsoft SQL Server database. Your application contains a form named CustomerForm.

 You add the following design-time components to the form:

• SqlConnection object named XYZConnection.
• SqlDataAdapter object named XYZDataAdapter.
• DataSet object named XYZDataSet.
• Five TextBox controls to hold the values exposed by XYZDataSet.


At design time, you set the DataBindings properties of each TextBox control to the appropriate column in the DataTable object of XYZDataSet. When you test the application, you can successfully connect to the database. However, no data is displayed in any text boxes.

You need to modify your application code to ensure that data is displayed appropriately. Which behavior should occur while the CustomerForm.Load event handler is running?

A) Execute the BeginInit method of XYZDataSet. B) Execute the Open method of XYZConnection.
C) Execute the FillSchema method of XYZDataAdapter and pass in XYZDataSet. D) Execute the Fill method of XYZDataAdapter and pass in XYZDataSet.
 
Answer & Explanation Answer: D) Execute the Fill method of XYZDataAdapter and pass in XYZDataSet.

Explanation:

Dataset is a container; therefore, you need to fill it with data. You can populate a dataset by calling the Fill method of a data adapter.

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