Update README.md

README.md

@@ -7,8 +7,10 @@
 title: Biblio4 Schema Example
 ---
 erDiagram
-    BOOK }|--o{ USER : read_by
-    USER }o--|| COLLECTIONS : user_has
+    BOOK }o--|{ USER : read_by
+    USER ||--o{ COLLECTIONS : owns
+    REVIEW }o--|| BOOK : review_of
+    REVIEW }o--|| USER : review_by
     COLLECTIONS }o--o{ BOOK : are_composed_of
     BOOK {
         string isbn