-| Field | Description | Type | Null | Key | Default | Extra |
-| ----- | ----------- | ---- | ---- | --- | ------- | ----- |
-| uri-id | Id of the item-uri table entry that contains the item uri | int unsigned | YES | PRI | NULL | |
-| type | | tinyint unsigned | YES | PRI | 0 | |
-| tid | | int unsigned | YES | PRI | 0 | |
-| cid | Contact id of the mentioned public contact | int unsigned | YES | PRI | 0 | |
+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 | |
+| type | | tinyint unsigned | NO | PRI | 0 | |
+| tid | | int unsigned | NO | PRI | 0 | |
+| cid | Contact id of the mentioned public contact | int unsigned | NO | PRI | 0 | |
+
+Indexes
+------------
+
+| Name | Fields |
+| ------- | ---------------------- |
+| PRIMARY | uri-id, type, tid, cid |
+| tid | tid |
+| cid | cid |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uri-id | [item-uri](help/database/db_item-uri) | id |
+| tid | [tag](help/database/db_tag) | id |
+| cid | [contact](help/database/db_contact) | id |