Can I save the registration data in another database? I need 2 databases, one for clients and one for employees, and they are always saved in the same one.
Not sure to understand your question, but you have 1 data type for all users, if you want to store specific data depending on profiles, you need to setup a role for each user (via an option set), and if a user is an employee populate the data type employee and if a user is a client populate the data type client.