simple question about the database

[aayatoos]

i am using this statment to write and read from the database while it is located on the localhost but if i am want to put it on the net.

1. do i have to put a username and password to the database to make it more secuire or no need for that .

2.if i have to put a username and password for the database from where i go to put it

2.and what thing do i have to replace it with word "localhost"

the code is :

$db = mysql_connect("localhost", "root");

[OhLordy]

in most cases localhost stays the same, you should create a user with minimal priveleges for the site use have a look here for information about user management in MySQL.
HTH
Rob