Stores password history for each user with access to the Replication Server.
| 
                                     Column  | 
                                     Datatype  | 
                                     Description  | 
|---|---|---|
| uid | rs_id | 
                                     ID of the user.  | 
| enc_password | varchar(66) | 
                                     Encrypted password.  | 
| password_date | datetime | 
                                     Date when the password is originally set.  |