quantities and images on delete cascade

scripts/ddl.sql

@@ -1,10 +1,13 @@
 CREATE EXTENSION IF NOT EXISTS "postgis";
 CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
 CREATE EXTENSION IF NOT EXISTS "fuzzystrmatch";
+
 DROP TYPE IF EXISTS QUANTITY CASCADE;
 CREATE TYPE QUANTITY AS ENUM ('lots', 'many', 'few', 'none');
+
 DROP TYPE IF EXISTS CATEGORY CASCADE;
 CREATE TYPE CATEGORY AS ENUM ('beverages', 'desserts', 'entrees', 'other');
+
 DROP TABLE IF EXISTS food_items CASCADE;
 CREATE TABLE food_items (
 	id              uuid PRIMARY KEY,
@@ -14,25 +17,31 @@ CREATE TABLE food_items (
 	images          VARCHAR,
 	loc             geography(POINT,4326)
 );
+
 DROP TABLE IF EXISTS images CASCADE;
 CREATE TABLE images (
     filename        VARCHAR(200) PRIMARY KEY,
-    food_item_id    uuid REFERENCES food_items (id),
+    food_item_id    uuid REFERENCES food_items (id) ON DELETE CASCADE,
     username        VARCHAR(100),
     date            timestamp (1) with time zone
 );
+
 DROP TABLE IF EXISTS quantities CASCADE;
 CREATE TABLE quantities (
-	food_item_id    uuid REFERENCES food_items (id),
+	food_item_id    uuid REFERENCES food_items (id) ON DELETE CASCADE,
 	date            timestamp (1) with time zone,
 	quantity        QUANTITY,
 	PRIMARY KEY(food_item_id, date)
 );
+
+
 CREATE INDEX IF NOT EXISTS food_loc_index ON food_items USING GIST ( loc );
+
 DROP VIEW IF EXISTS latest_quantities;
 CREATE VIEW latest_quantities AS SELECT food_item_id, quantity, date from quantities q1 where date = (
 	SELECT max(date) FROM quantities q2 WHERE q1.food_item_id=q2.food_item_id
 );
+
 --INSERT INTO food_items (id, name, place_id, category, loc)
 --  VALUES (
 --		uuid_generate_v4(),