diff --git a/docs/ai/quickstart_fastapi_ai.rst b/docs/ai/quickstart_fastapi_ai.rst
index f7be6a8c677..958831b8f8b 100644
--- a/docs/ai/quickstart_fastapi_ai.rst
+++ b/docs/ai/quickstart_fastapi_ai.rst
@@ -33,17 +33,17 @@ Using the built-in RAG
             type Deck extending Timestamped {
                 required name: str;
                 description: str;
-                cards := (
-                    select .<deck[is Card]
-                    order by .order
-                );
+
+                multi cards: Card {
+                    constraint exclusive;
+                    on target delete allow;
+                };
             };
 
             type Card extending Timestamped {
                 required order: int64;
                 required front: str;
                 required back: str;
-                required deck: Deck;
             }
         }
 
@@ -75,17 +75,17 @@ Using the built-in RAG
               type Deck extending Timestamped {
                   required name: str;
                   description: str;
-                  cards := (
-                      select .<deck[is Card]
-                      order by .order
-                  );
+
+                  multi cards: Card {
+                      constraint exclusive;
+                      on target delete allow;
+                  };
               };
 
               type Card extending Timestamped {
                   required order: int64;
                   required front: str;
                   required back: str;
-                  required deck: Deck;
               }
           }
 
@@ -198,17 +198,17 @@ Using the built-in RAG
               type Deck extending Timestamped {
                   required name: str;
                   description: str;
-                  cards := (
-                      select .<deck[is Card]
-                      order by .order
-                  );
+
+                  multi cards: Card {
+                      constraint exclusive;
+                      on target delete allow;
+                  };
               };
 
               type Card extending Timestamped {
                   required order: int64;
                   required front: str;
                   required back: str;
-                  required deck: Deck;
 
         +         deferred index ext::ai::index(embedding_model := 'text-embedding-3-small')
         +             on (.front ++ ' ' ++ .back);