I've set up a local server and database using MySQL and have followed a tutorial in trying to access the database. So far I have the following code:

import System;
import System.Data;
import System.Data.SqlClient;

private var database : IDbConnection;
private var connectionString : String =
    "Server=localhost;" + 
    "Database=test;" +
    "User ID=demo;" +
    "Password=demo;";

function Start(){
    database = new SqlConnection(connectionString);
    database.Open();
    var dbcmd : IDbCommand = database.CreateCommand();
    var cmdSql : String = "SELECT * FROM unityDemo;";
    dbcmd.CommandText = cmdSql;
    var reader : IDataReader = dbcmd.ExecuteReader();

    while(reader.Read()) {
       var name : String = reader ["Name"].ToString();
       var comment : String = reader ["Comment"].ToString();

       print ("Name: " + name + "Comment: " + comment);
    }

    reader.Close();
    reader = null;
    database.Close();
    database = null;
}

However when I run it I get the following error message:

SocketException: Connection refused System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP, Boolean requireSocketPolicy) System.Net.Sockets.Socket+Worker.Connect () Rethrow as TdsInternalException: Server does not exist or connection refused.

Can anyone spot why I can not connect to the database? Any advice would greatly help.