ow to Install MariaDB 10.4 on Ubuntu 18.04, Ubuntu 20.04 code example

Example 1: install mariadb 10.2 ubuntu 16.04

sudo apt update
sudo apt install mariadb-server

Example 2: mariadb install on ubuntu 20.04

GRANT ALL ON *.* TO 'admin'@'localhost' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;