| wall | This item was posted to the wall of uid | tinyint(1) | NO | MUL | 0 | |
| gravity | | tinyint(1) | NO | | 0 | |
| parent | item.id of the parent to this item if it is a reply of some form; otherwise this must be set to the id of this item | int(10) unsigned | NO | MUL | 0 | |
| parent-uri | uri of the parent to this item | varchar(255) | NO | MUL | | |
| extid | | varchar(255 | NO | MUL | | |
| thr-parent | If the parent of this item is not the top-level item in the conversation, the uri of the immediate parent; otherwise set to parent-uri | varchar(255) | NO | | | |
| created | Creation timestamp. | datetime | NO | | 0001-01-01 00:00:00 | |
| edited | Date of last edit (default is created) | datetime | NO | | 0001-01-01 00:00:00 | |
| commented | Date of last comment/reply to this item | datetime | NO | | 0001-01-01 00:00:00 | |
| received | datetime | 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 | |
| object-type | ActivityStreams object type | varchar(255) | NO | | | |
| object | JSON encoded object structure unless it is an implied object (normal post) | text | NO | | NULL | |
| target-type | ActivityStreams target type if applicable (URI) | varchar(255) | NO | | | |
| target | JSON encoded target structure if used | text | NO | | NULL | |
| postopts | External post connectors add their network name to this comma-separated string to identify that they should be delivered to these networks during delivery | text | NO | | NULL | |
| plink | permalink or URL toa displayable copy of the message at its source | varchar(255) | NO | | | |
| resource-id | Used to link other tables to items, it identifies the linked resource (e.g. photo) and if set must also set resource_type | varchar(255) | NO | MUL | | |
| event-id | Used to link to the event.id | int(11) | NO | | 0 | |
| tag | | mediumtext | NO | | NULL | |
| attach | JSON structure representing attachments to this item | mediumtext | NO | | NULL | |
| inform | | mediumtext | NO | | NULL | |
| file | | mediumtext | NO | | NULL | |
| location | text location where this item originated | varchar(255) | NO | | | |
| coord | longitude/latitude pair representing location where this item originated | varchar(255) | NO | | | |
| allow_cid | Access Control - list of allowed contact.id '<19><78>' | mediumtext | NO | | NULL | |
| allow_gid | Access Control - list of allowed groups | mediumtext | NO | | NULL | |
| deny_cid | Access Control - list of denied contact.id | mediumtext | NO | | NULL | |
| deny_gid | Access Control - list of denied groups | mediumtext | NO | | NULL | |
| private | distribution is restricted | tinyint(1) | NO | | 0 | |
| pubmail | | tinyint(1) | NO | | 0 | |
| moderated | | tinyint(1) | NO | | 0 | |
| visible | | tinyint(1) | NO | | 0 | |
| spam | | tinyint(1) | NO | | 0 | |
| starred | item has been favourited | tinyint(1) | NO | | 0 | |
| bookmark | item has been bookmarked | tinyint(1) | NO | | 0 | |
| unseen | item has not been seen | tinyint(1) | NO | | 1 | |
| deleted | item has been deleted | tinyint(1) | NO | MUL | 0 | |
| origin | item originated at this site | tinyint(1) | NO | | 0 | |
