Criando um banco SQL em PHP

<?php


$conexao = mysql_connect("Localhost", "root", "") or die (mysql_error());

mysql_query('CREATE DATABASE IF NOT EXISTS BANCO') or die (mysql_error());


mysql_query('USE BANCO') or die (mysql_error());

mysql_query('CREATE TABLE IF NOT EXISTS `DAODS` (
  `ds_nome` varchar(50) NOT NULL,
  `ds_telefone` varchar(15) NOT NULL,
  `cd_login` varchar(30) NOT NULL,
  KEY `cd_login` (`cd_login`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
') or die (mysql_error());

mysql_query('CREATE TABLE IF NOT EXISTS `LOGIN` (
  `cd_login` varchar(20) NOT NULL,
  `ds_senha` varchar(20) NOT NULL,
  PRIMARY KEY (`cd_login`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
') or die (mysql_error());


mysql_query("ALTER TABLE `DAODS`
  ADD CONSTRAINT `DAODS_ibfk_1` FOREIGN KEY (`cd_login`) REFERENCES `LOGIN` (`cd_login`);") or die (mysql_error());

echo "<br>banco criado";
?>