using System;
using System.Data;
using System.Data.SqlClient;
class ExecuteDDL
{
public static void Main()
{
SqlConnection mySqlConnection =new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;");
SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
mySqlCommand.CommandText =
"CREATE TABLE MyEmployee (" +
" ID int CONSTRAINT PK_Persons PRIMARY KEY," +
" FirstName nvarchar(15) NOT NULL," +
" LastName nvarchar(15) NOT NULL," +
" DateOfBirth datetime" +
")";
mySqlConnection.Open();
Console.WriteLine("Creating MyEmployee table");
int result = mySqlCommand.ExecuteNonQuery();
Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
mySqlCommand.CommandText =
"ALTER TABLE MyEmployee " +
"ADD EmployerID nchar(5) CONSTRAINT FK_Persons_Customers " +
"REFERENCES Employee(ID)";
Console.WriteLine("Altering MyEmployee table");
result = mySqlCommand.ExecuteNonQuery();
Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
mySqlCommand.CommandText = "DROP TABLE MyEmployee";
Console.WriteLine("Dropping MyEmployee table");
result = mySqlCommand.ExecuteNonQuery();
Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
mySqlConnection.Close();
}
}