A Permanent User in RADIUSdesk has the following reference ids to other entities.
user_id This is the id of the owner (Access Provider) to which the Permanent User belong.
realm_id Each Permanent User has to belong to a Realm. A Realm is like a group but used by RADIUS.
profile_id Each Permanent User have to a Profile. A Profile can be used by RADIUS to dictate the service (bandwidth, amount of data available etc) a Permanent User will get when connecting to the Internet.
So to recap. A Permanent User has to have:
An Owner
A Realm
A Profile
This will be important when we want to use the API to create a Permanent User which is why we cover it first.