This is very useful when you want to provide access to one database only within the Cpanel account.
You need to create separate phpMyAdmin access though the Softaculous App Installer.
Then install direct phpmyadmin access under your site ulr (like https://newdomain.com/phpmyadmin/), and use it to connect with the database credentials set for your site.
You can check how to create MySQL Databases and Users here:
Updated almost 2 years ago