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. You use Entity SQL of the ADO.NET Entity
Framework to retrieve data from the database.
You need to define a custom function in the conceptual model. You also need to ensure that the function
calculates a value based on properties of the object.
Which two XML element types should you use? (Each correct answer presents part of the solution. Choose
two.)

• A. Function
• B. FunctionImport
• C. Association
• D. Dependent
• E. DefiningExpression

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.
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.OverwriteChanges option.
• B. Call the Refresh method of ObjectContext by using the RefreshMode.StoreWins option.
• C. Call the query's Execute method by using the MergeOptions.AppendOnly option.
• D. Call the Refresh method of ObjectContext by using the RefreshMode.ClientWins option.

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. You add the following table to the database.
CREATE TABLE ObjectCache ( Id INT IDENTITY PRIMARY KEY, SerializedObjectData XML)
You write the following code segment to retreive records from the ObjectCache table. (Line numbers are included for reference only.)
01 string s = GetConnectionStringFromConfigFile("xmldb");
02 using (SqlConnection conn = new SqlConnection(s))
03 using (SqlCommand cmd = new SqlCommand("select * from ObjectCache",
conn))
04 {
05 conn.Open();
06 SqlDataReader rdr = cmd.ExecuteReader();
07 while(rdr.Read())
08 {
09 ...
10 DeserializeObject(obj);
11 }
12 }
You need to retreive the data from the SerializedObjectData column and pass it to a method named
DeserializeObject.
Which line of code should you insert at line 09?

• A. String obj = (String)rdr[1];
• B. XmlReader obj = (XmlReader)rdr[1];
• C. Type obj = (Type)rdr[1];
• D. SByte obj = (SByte)rdr[1];

Which one of these samples it the correct way to close the connection using Command Behavior?

• A. SqlDataReader rdr = new SqlDataReader(); string sql = @"sql statement"; SqlConnection conn = connection.GetConnection(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); conn.Close(); Console.WriteLine("{0}", rdr);
• B. SqlDataReader rdr = new SqlDataReader(); string sql = @"sql statement"; SqlConnection conn = connection.GetConnection(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); rdr.Close(); Console.WriteLine("{0}", rdr);
• C. using (SqlDataReader rdr = new SqlDataReader())
  {
  string sql = @"sql statement";
  SqlConnection conn = connection.GetConnection();
  SqlCommand cmd = new SqlCommand(sql, conn);
  SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
  Console.WriteLine("{0}", rdr);
  }
• D. SqlDataReader rdr = new SqlDataReader(); string sql = @"sql statement"; SqlConnection conn = connection.GetConnection(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); Console.WriteLine("{0}", rdr);

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server 2008 database.
You use the ADO.NET Entity Framework to model your entities. You use ADO.NET self-tracking entities.
You need to ensure that the change-tracking information for the self-tracking entities can be used to update
the database.
Which ObjectContext method should you call after changes are made to the entities?

• A. Attach
• B. Refresh
• C. SaveChanges
• D. ApplyChanges