-| Field | Description | Type | Null | Key | Default | Extra |
-| --------- | ------------------------------------------------------------------------------------------------------- | ------------ | ---- | --- | ------------------- | ----- |
-| 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 | |
-| commented | | datetime | NO | | 0001-01-01 00:00:00 | |
+Fields
+------
+
+| Field | Description | Type | Null | Key | Default | Extra |
+| --------------- | ------------------------------------------------------------------------------------------------------- | ------------ | ---- | --- | ------------------- | ----- |
+| uri-id | Id of the item-uri table entry that contains the item uri | int unsigned | NO | PRI | NULL | |
+| conversation-id | Id of the item-uri table entry that contains the conversation uri | int unsigned | YES | | 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 | |
+| commented | | datetime | NO | | 0001-01-01 00:00:00 | |
+
+Indexes
+------------
+
+| Name | Fields |
+| --------------- | --------------- |
+| PRIMARY | uri-id |
+| conversation-id | conversation-id |
+| owner-id | owner-id |
+| author-id | author-id |
+| causer-id | causer-id |
+| received | received |
+| commented | commented |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uri-id | [item-uri](help/database/db_item-uri) | id |
+| conversation-id | [item-uri](help/database/db_item-uri) | id |
+| owner-id | [contact](help/database/db_contact) | id |
+| author-id | [contact](help/database/db_contact) | id |
+| causer-id | [contact](help/database/db_contact) | id |