CAA160 exercise 3 final state

bookstore/db/schema.cds

@@ -0,0 +1,30 @@
+namespace sap.capire.bookstore;
+
+using { Currency, cuid, managed }      from '@sap/cds/common';
+using { sap.capire.products.Products } from '@sap/capire-products';
+
+entity Books as projection on Products; extend Products with {
+    // Note: we map Books to Products to allow reusing AdminService as is
+    author : Association to Authors;
+}
+
+entity Authors : cuid {
+    firstname : String(111);
+    lastname  : String(111);
+    books     : Association to many Books on books.author = $self;
+}
+
+@Capabilities.Updatable: false
+entity Orders : cuid, managed {
+    items    : Composition of many OrderItems on items.parent = $self;
+    total    : Decimal(9,2) @readonly;
+    currency : Currency;
+}
+
+@Capabilities.Updatable: false
+entity OrderItems : cuid {
+    parent    : Association to Orders not null;
+    book_ID   : UUID;
+    amount    : Integer;
+    netAmount : Decimal(9,2) @readonly;
+}