How to find out which database is on the server (Debian, root is): MySQL or MariaDB?

Question

MySQL

How to find out which database is on the server (Debian, root is): MySQL or MariaDB? Googling does not help, stubbornly produces articles why MariaDB is better.
Sorry in advance for the stupid question, I'm in the administration system not so long ago.

Answer 1

log in through the console to mysql (mysql -u your user is -p (if there is a password) and as far as I remember, Maria admits that she is Maria)

Answer 2

select version() -- no root needed

Answer 3

mysql --defaults-file=/etc/mysql/debian.cnf
select version();