Where are the database username and password stored ?

Hi,

I’d like to send my Drupal installation to a colleague, but I don’t want him to see the username and the password of my database.
Where are stored these informations ?

I’ve seen that the username and the password are written in sitename/sites/default/settings.php, but is it the only file with these informations ?
Is it sufficient if I change the username and the password in this file and then sending my colleague all my Drupal files and my database ?

Thank you.


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