Sandbox API with Application Service

bookshop/db/schema.cds

@@ -36,6 +36,7 @@ entity Authors : managed, extensible {
 
 extend Authors with {
   virtual age : Integer;
+  virtual exampleBook: String;
 }
 
 /**
@@ -47,3 +48,9 @@ entity Genres : sap.common.CodeList {
       children : Composition of many Genres
                    on children.parent = $self;
 }
+
+entity Publishers: managed {
+  key ID: Integer;
+  name: String(111);
+
+}