Adminer is a simple tool for database management. It's possible to manage MySQL, PostgreSQL, Sqlite3, MS SQL and Oracle. It's a simpler alternative to PhpMyAdmin. You can find more pieces of information about this project at official page or Wikipedia.
Installation under Apache
Ensure you do not have an older copy of Adminer:
$ rm -r /srv/http/adminer
# systemctl restart httpd
In case there is an (403) error, change the following lines inside the
Alias /adminer "/usr/share/webapps/adminer" <Directory "/usr/share/webapps/adminer"> AllowOverride All Require all granted #php_admin_value open_basedir "/srv/:/tmp/:/usr/share/webapps/:/etc/webapps:/usr/share/pear/" </Directory>