Looking for logging into the Wordpress Use External Db For site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Wordpress Use External Db For site. After that you can login as usual with your login credentials.
https://wordpress.stackexchange.com/questions/53082/login-in-wordpress-using-external-database-data
https://wordpress.org/plugins/external-login/
https://stackoverflow.com/questions/10724414/login-in-wordpress-using-external-database-data
https://www.linode.com/docs/databases/mariadb/configure-wordpress-remote-database/
https://www.experts-exchange.com/questions/28295022/Integrating-Wordpress-with-External-Database.html
https://github.com/atutor/wordpress/tree/master/wp_plugin/external-database-authentication
https://github.com/antriver/wp-external-db-auth-multisite
https://talk.plesk.com/threads/solved-wordpress-connecting-to-external-db.336610/
https://www.wpsecurityauditlog.com/support-documentation/plugin-database-documentation/
https://docs.moodle.org/en/External_database_authentication
https://themeisle.com/blog/wordpress-customer-database/
https://wpengine.com/support/setting-remote-database-access/
https://premium.wpmudev.org/blog/mysql-databases/