phpMyAdmin is a PHP-based MySQL database administration utility which can be used to modify and administer the MySQL databases you create within the MySQL Manager in your HostRocket control panel.
To access phpMyAdmin log in to cPanel (https://yourdomain.com:2087).
After logged in locate phpMyAdmin on your cPanel home page!
When logging in to phpMyAdmin be sure to use the user name and password for the database user you created in MySQL Manager and which you have added to the database you wish to work with (not your HostRocket account user name and password).
Note that database user names will be in the format hruser_dbuser where "hruser" is your HostRocket user name (more often than not the first seven characters of your domain name) and "dbuser" is the database user name you created within the MySQL Manager.