What is the version correspondence between MariaDB and MySQL?

The versions of MariaDB and MySQL correspond to each other.

1. MariaDB 10.1 corresponds to MySQL 5.6.
2. MariaDB 10.2 is equivalent to MySQL 5.7.
3. MariaDB 10.3 is equivalent to MySQL 8.0.
4. MariaDB 10.4 is equivalent to MySQL 8.0.
5. MariaDB 10.5 is equivalent to MySQL 8.0.

This relationship is not a one-to-one correspondence, as MariaDB and MySQL are two different database management systems with their own characteristics and improvements, although they have a common origin. Thus, it is important to be mindful of the differences and compatibility between versions when using them.