If you wan’t easy external access to a MariaDB/MySQL/PostGreSQL/SQLite and some other known databases that consist of a single php file that is easy to setup on any webserver with PHP then Adminer is a great and handy little solution to install.
Here is a small screenshot of the system, it allows the most basic SQL features as creating a database, handle table schema, insert, update, create an query a database.
Adminer is also faster and tidier than phpMyAdmin that would be the closest similar management system.