Login Authentication #

MySQL Authentication Protocol #

https://dev.mysql.com/doc/refman/8.0/en/authentication-plugins.html

PostgreSQL Authentication Protocol #

https://www.postgresql.org/docs/14/auth-methods.html

OpenGauss Authentication Protocol #

https://opengauss.org/en/docs/2.1.0/docs/Developerguide/configuration-file-reference.html

LDAP #

https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol