| uri-id | Id of the item-uri table entry that contains the item uri | int unsigned | NO | PRI | NULL | |
| owner-id | Item owner | int unsigned | NO | | 0 | |
| author-id | Item author | int unsigned | NO | | 0 | |
| causer-id | Link to the contact table with uid=0 of the contact that caused the item creation | int unsigned | YES | | NULL | |
| network | | char(4) | NO | | | |
| created | | datetime | NO | | 0001-01-01 00:00:00 | |
| received | | datetime | NO | | 0001-01-01 00:00:00 | |
| changed | Date that something in the conversation changed, indicating clients should fetch the conversation again | datetime | NO | | 0001-01-01 00:00:00 | |
