^ Why? should have some backup. Regardless, I do my own backup, I just use x10 system just in case
??? PHPMyAdmin is a php based software which can access and administer a MySQL database, i.e. you can use it to view the database and edit it, it is like a GUI for your database. It isn't part of MySQL. (E.g. PMA is just another web based software, with the speciality that it shows you your database.) Basically what you see in PMA is the content of your MySQL database, which gets backed up daily (I think) now.PHPMyAdmin is a part of MySQL. It is backed up whenever MySQL is. Otherwise monthly/bi-weekly backups are fine here.