using System;
using System.Data;
using System.Data.SqlClient;
class ExecuteDDL {
public static void Main() {
SqlConnection mySqlConnection = new SqlConnection("server=localhost;database=Northwind;uid=sa;pwd=sa");
SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
mySqlCommand.CommandText =
"CREATE TABLE MyPersons (" +
" PersonID int CONSTRAINT PK_Persons PRIMARY KEY," +
" FirstName nvarchar(15) NOT NULL," +
" LastName nvarchar(15) NOT NULL," +
" DateOfBirth datetime" +
")";
mySqlConnection.Open();
Console.WriteLine("Creating MyPersons table");
int result = mySqlCommand.ExecuteNonQuery();
Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
mySqlCommand.CommandText =
"ALTER TABLE MyPersons " +
"ADD EmployerID nchar(5) CONSTRAINT FK_Persons_Customers " +
"REFERENCES Customers(CustomerID)";
result = mySqlCommand.ExecuteNonQuery();
Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
mySqlCommand.CommandText = "DROP TABLE MyPersons";
result = mySqlCommand.ExecuteNonQuery();
Console.WriteLine("mySqlCommand.ExecuteNonQuery() = " + result);
mySqlConnection.Close();
}
}
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