Started mendix a while ago. Just wanted to create a login page, can anyone suggest how to create microflow for that. Users are stored in external database.
To add to Remco’s answer, you can also setup a login page for anonymous users. If you enable that in your project security, you can create a role based home page for the anonymous user and use the login form widget to allow users to log in.
Mendix offers default registration/login functionality, which does not need any logic in addition to basic manipulations on user accounts (create, change).
If you want to store only your users in an external database, it might be best to set up a web service for that. If you really want to use an external login system, SAML SSO might be the way to go.