edit following files
'// Name of the file $filename = 'db-backup-1426746323-fa5bfef761fada0cc5531454fec94cad.sql';
// MySQL host $mysql_host = 'localhost';
// MySQL username $mysql_username = 'root';
// MySQL password $mysql_password = '';
// Database name $mysql_database = 'test';'
before import your database , delete all existing table which are already in the .sql file