+Indexes
+------------
+
+| Name | Fields |
+| ------------ | ----------------- |
+| PRIMARY | cid, relation-cid |
+| relation-cid | relation-cid |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| cid | [contact](help/database/db_contact) | id |
+| relation-cid | [contact](help/database/db_contact) | id |
+