How many times users must change their passwords before they can reuse an old password.
How many times users can fail to log in before their account is locked.
The required length and content of the password (maximum and minimum amount of characters
and the minimum number of letters, capital letters, lowercase letters, digits, and symbols that must be in a password).
Profiles are need to enforce diferent classes of users and diferent policies depending on the user/group you asign them to.
If no profile is asigned to the user when created the DEFAULT profile will be asigned to him.
Syntax:
Example:
The combinations are unlimited and mostly depend on you application requirements.