Microsoft TS: Accessing Data with Microsoft .NET Framework 4 can feel demanding because it measures both knowledge recall and practical decision-making. With 196 70-516 practice questions from Actual4dump, you can turn a broad syllabus into repeated, manageable review sessions.

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Microsoft TS: Accessing Data with Microsoft .NET Framework 4: Frequently Asked Questions

Microsoft TS: Accessing Data with Microsoft .NET Framework 4 Sample Questions:

Question 1

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database. The application uses DataContexts to query
the database.
The application meets the following requirements:
-Stores customer data offline.
-Allows users to update customer records while they are disconnected from the server.
-Enables offline changes to be submitted back to the SQL Server by using the DataContext object.
You need to ensure that the application can detect all conflicts that occur between the offline customer information submitted to the SQL Server and the server version. You also need to ensure that you can roll back local changes. What should you do?

A. Add a try/catch statement around calls to the SubmitChanges method of the DataContext object and catch ChangeConflictExceptions.
B. Add a try/catch statement around calls to the SubmitChanges method of the DataContext object and catch SqlExceptions.
C. Override the Update operation of the DataContext object. Call the ExecuteDynamicUpdate method to generate the update SQL.
D. Call the SubmitChanges method of the DataContext object. Pass System.Data.Linq.ConflictMode.ContinueOnConflict to the method.

Question 2

You have a ContosoEntities context object named context and a Color object stored in a variable named color.
You write the following code:
context.Colors.DeleteObject(color); context.SaveChanges();
When the code runs, it generates the following exception:
System.Data.UpdateException: An error occurred while updating the entries. See
the inner exception for detials. --->
System.Data.SqlClient.SqlException: The DELETE satement conflicted with the
REFERENCE constraint "FK_PartColor".
The conflict occurred in database "Contoso", table "dbo.Parts", column
'ColorId'
You need to resolve the exception without negatively impacting the rest of the application. What should you do?

A. Change the End2 OnDelete proprety of the FK_PartColor association from None to Cascade
B. Change the End1 OnDelete proprety of the FK_PartColor association from None to Cascade
C. Add a transation around the call to the SaveChanges() method and handle the exception by performing a retry.
D. In the database, remove the foreign key association between the Parts table and the Colors table, and then update the entity data model.
E. Add code before the call to the DeleteObject() method to examine the collection of Part objects associated with the Color object and then assign null to the Color property for each Part object.

Question 3

You use Microsoft .NET Framework 4.0 to develop an application that uses Entity Framework. The application includes the following Entity SQL (ESQL) query.
SELECT VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice
You need to modify the query to support paging of the query results. Which query should you use?

A. SELECT TOP Stop VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice SKIP @skip
B. SELECT VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice SKIP @skip LIMIT @limit
C. SELECT SKIP @skip TOP Stop VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice
D. SELECT SKIP @skip VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice LIMIT @limit

Question 4

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application contains the following code segment. (Line numbers are included for reference only.)
01 class DataAccessLayer
02 {
03 private static string connString;
04 ...
05 ...
06 public static DataTable GetDataTable(string command){
07 ...
08 ...
09 }
10 }
You need to define the connection life cycle of the DataAccessLayer class.
You also need to ensure that the application uses the minimum number of connections to the database.
What should you do?

A. Insert the following code segment at line 07:
using (SqlConnection conn = new SqlConnection(connString))
{
conn.Open();
}
B. Insert the following code segment at line 04.
private static SqlConnection conn = new SqlConnection(connString);
public static void Open()
{
conn.Open();
}
public static void Close()
{
conn.Close();
}
C. Replace line 01 with the following code segment.
class DataAccessLayer : IDisposable
Insert the following code segment to line 04.
private SqlConnection conn = new SqlConnection(connString);
public void Open()
{
conn.Open();
}
public void Dispose()
{
conn.Close();
}
D. Insert the following code segment at line 04.
private SqlConnection conn = new SqlConnection(connString);
public void Open()
{
conn.Open();
}
public void Close()
{
conn.Close();
}

Question 5

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application uses the ADO.NET Entity Framework to model entities.
You need to ensure that the model and mapping files are not deployed as application resources. What
should you do?

A. Modify the connection string in the application's .config file to refer to the relative path to the .edmx file.
B. Modify the connection string in the application's .config file to refer to the absolute physical path to the .edmx file.
C. Set the value of the .edmx file's Build Action property to Copy to Output.
D. Set the value of the .edmx file's Metadata Artifact Processing property to Copy to Output Directory.

Solutions: