Microsoft 070-516 : TS: Accessing Data with Microsoft .NET Framework 4

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Microsoft 070-516 Exam Syllabus Topics:

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

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) Call the SubmitChanges method of the DataContext object. Pass System.Data.Linq.ConflictMode.ContinueOnConflict to the method.
D) Override the Update operation of the DataContext object. Call the ExecuteDynamicUpdate method to generate the update SQL.

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server 2008 database. The application includes a SqlConnection named
conn and a SqlCommand named cmd.
You need to create a transaction so that database changes will be reverted in the event that an exception is
thrown.
Which code segment should you use?

A) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
}
catch
{
transaction.Commit();
}
B) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Commit();
}
catch
{
transaction.Rollback();
}
C) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Commit();
}
catch
{
transaction.Dispose();
}
D) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Rollback();
}
catch
{
transaction.Dispose();
}

3. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
200B database.
You populate a SqlDataAdapter by using the following code. (Line numbers are included for reference only.)
01 SqlDataAdapter dataAdapter1 = new SqlDataAdapter("SELECT * FROM
[BlogEntries] ORDER BY CreationDate", connection);
02 cmdBuilder = new SqlCommandBuilder(dataAdapter1);
03 dataAdapter1.Fill(BlogEntryDataSet, "BlogEntries");
04 ....
05 connection.Close();
You need to update the blog owner for all BlogEntry records. Which code segment should you insert at line 04?

A) foreach(DataRow row in BlogEntryDataSet.Tables["BlogEntries"].Rows) {
row.Item["BlogOwner""] = "New Owner";
}
dataAdapter1.Fill(BlogEntryDataSet, "BlogEntries");
B) foreach(DataRow row in BlogEntryDataSet.Tables["BlogEntries"].Rows) {
row.Item["BlogOwner""] = "New Owner";
}
dataAdapter1.Update(BlogEntryDataSet, "BlogEntries");
C) SqlDataAdapter dataAdapter2 = new SqlDataAdapter("UPDATE [BlogEntries] SET [BlogOwner] = "New
'Owner' 3", connection);
dataAdapter2.Update(BlogEntryDataSet, "BlogEntries");
D) SqlDataAdapter dataAdapter2 = new SqlDataAdapter(dataAdapterl.UpdateCommand); dataAdapter2.Fill(BlogEntryDataSet, "BlogEntries");

4. 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 the ADO.NET Entity
Framework to model entities.
The database includes objects based on the exhibit.
The application includes the following code segment. (Line numbers are included for reference only.)
01 using (AdventureWorksEntities context = new AdventureWorksEntities()){
02 ...
03 foreach (SalesOrderHeader order in customer.SalesOrderHeader){
04 Console.WriteLine(String.Format("Order: {0} ",
order.SalesOrderNumber));
05 foreach (SalesOrderDetail item in order.SalesOrderDetail){
06 Console.WriteLine(String.Format("Quantity: {0} ", item.Quantity));
07 Console.WriteLine(String.Format("Product: {0} ",
item.Product.Name));
08 }
09 }
10 }
You want to list all the orders for a specified customer. You need to ensure that the list contains the following fields:
-Order number
-Quantity of products
-Product name
Which code segment should you insert at line 02?

A) Contact customer = context.Contact.Where("it.ContactID = @customerId", new ObjectParameter ("customerId", customerId)).First();
B) Contact customer = context.Contact.Where("it.ContactID = @customerId", new ObjectParameter ("@customerId", customerId)).First();
C) context.ContextOptions.LazyLoadingEnabled = true;
Contact customer = (from contact in context.Contact
include("SalesOrderHeader.SalesOrderDetail")
select conatct).FirstOrDefault();
D) Contact customer = (from contact in context.Contact
include("SalesOrderHeader") select conatct).FirstOrDefault();

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application.
You use the ADO.NET Entity Framework Designer to model entities.
You need to ensure that the entities are self-tracking. What should you do in the ADO.NET Entity
Framework Designer?

A) Change the Transform Related Text Templates On Save option to False.
B) Add an ADO.NET Self-Tracking Entity Generator to the model.
C) Change the Code Generation Strategy option from Default to None.
D) Add an ADO.NET EntityObject Generator to the model.

Solutions: