| actor-id | Link to the contact table with uid=0 of the actor that caused the notification | int unsigned | YES | | NULL | |
| target-uri-id | Item-uri id of the related post | int unsigned | YES | | NULL | |
| parent-uri-id | Item-uri id of the parent of the related post | int unsigned | YES | | NULL | |
| actor-id | Link to the contact table with uid=0 of the actor that caused the notification | int unsigned | YES | | NULL | |
| target-uri-id | Item-uri id of the related post | int unsigned | YES | | NULL | |
| parent-uri-id | Item-uri id of the parent of the related post | int unsigned | YES | | NULL | |