...

reviews/db/schema.cds

@@ -0,0 +1,31 @@
+namespace sap.capire.reviews;
+using { User } from '@sap/cds/common';
+
+// Reviewed subjects can be any entity that is uniquely identified
+// by a single key element such as a UUID
+type ReviewedSubject : String(111);
+
+entity Reviews {
+  key ID   : UUID;
+  subject  : ReviewedSubject;
+  reviewer : User;
+  rating   : Rating;
+  title    : String(111);
+  text     : String(1111);
+  date     : DateTime;
+  likes    : Composition of many Likes on likes.review = $self;
+  liked    : Integer default 0; // counter for likes as helpful review (count of all _likes belonging to this review)
+}
+
+type Rating : Decimal(3,2) enum {
+  Best  = 5;
+  Good  = 4;
+  Avg   = 3;
+  Poor  = 2;
+  Worst = 1;
+}
+
+entity Likes {
+  key review : Association to Reviews;
+  key user   : User;
+}