+Indexes
+------------
+
+| Name | Fields |
+| ------------- | ------------- |
+| PRIMARY | uri-id |
+| parent-uri-id | parent-uri-id |
+| thr-parent-id | thr-parent-id |
+| external-id | external-id |
+| owner-id | owner-id |
+| author-id | author-id |
+| causer-id | causer-id |
+| vid | vid |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uri-id | [item-uri](help/database/db_item-uri) | id |
+| parent-uri-id | [item-uri](help/database/db_item-uri) | id |
+| thr-parent-id | [item-uri](help/database/db_item-uri) | id |
+| external-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 |
+| vid | [verb](help/database/db_verb) | id |
+