[Zope] Access based on a table of users

I have a table of users from a database and I would like to have login based on it. Concretely, I have a form to edit record(s) in a (second) table of whatever data which is the responsability of a user(s). When a user presses an Edit button, I would like to ask him for a login/password to access the record. I can manually implement this check but may be it could be based on zope security? The login/password should be stored in the table of users. How can I "link" this table with acl_users without manually maintaining the "link"? Thanks, Fernando