| uid | | int(10) unsigned | NO | MUL | 0 | |
| contact-id | | int(11) unsigned | NO | | 0 | |
| gcontact-id | Global Contact | int(11) unsigned | NO | | 0 | |
+| owner-id | Item owner | int(11) unsigned | NO | MUL | 0 | |
+| author-id | Item author | int(11) unsigned | NO | MUL | 0 | |
| created | | datetime | NO | MUL | 0000-00-00 00:00:00 | |
| edited | | datetime | NO | | 0000-00-00 00:00:00 | |
| commented | | datetime | NO | MUL | 0000-00-00 00:00:00 | |