Reworking tables

app/Migrations/0010-tables.sql

@@ -1,88 +1,85 @@
+--------------------------------------------
+-- Recipe/Cookie related tables
+--------------------------------------------
+
+-- Our known customers, may need more fields
 CREATE TABLE IF NOT EXISTS customers (
   customer_id int PRIMARY KEY,
-  name varchar(100),
-  address varchar(255)
+  customer_name varchar(100),
+  customer_address varchar(255)
+  -- ...Perhaps more columns
 );
 
-CREATE TABLE IF NOT EXISTS products (
-  product_id int PRIMARY KEY,
-  name varchar(100)
-);
-
-CREATE TABLE IF NOT EXISTS recipes (
-  recipe_name varchar(100),
-  recipe_year year,
-  ingredients int,
-  product_id int,
-  PRIMARY KEY (recipe_name, recipe_year),
-  FOREIGN KEY (ingredients) REFERENCES ingredients(ingredient_id),
-  FOREIGN KEY (product_id) REFERENCES products(product_id)
-);
-
-CREATE TABLE IF NOT EXISTS ingredients (
-  ingredient_id int PRIMARY KEY,
-  raw_material_name varchar(100),
-  amount int,
-  unit varchar(50),
-  FOREIGN KEY (raw_material_name) REFERENCES raw_materials(raw_material_name)
-);
-
-CREATE TABLE IF NOT EXISTS raw_materials (
-  raw_material_name varchar(100) PRIMARY KEY,
-  quantity int,
-  last_delivery_date_time datetime
-);
-
-CREATE TABLE IF NOT EXISTS pallets_produced (
-  pallet_id int PRIMARY KEY,
-  product_id int,
-  production_date_time datetime,
-  FOREIGN KEY (product_id) REFERENCES products (product_id)
-);
-
-CREATE TABLE IF NOT EXISTS pallets_delivered (
-  delivered_id int PRIMARY KEY,
-  pallet_id int,
-  delivery_date_time datetime,
-  FOREIGN KEY (pallet_id) REFERENCES pallets_produced (pallet_id),
-  FOREIGN KEY (delivered_id) REFERENCES truck (pallet)
-);
-
-CREATE TABLE IF NOT EXISTS truck (
-  truck_id int PRIMARY KEY,
-  capacity int,
-  pallet int
-);
-
-CREATE TABLE IF NOT EXISTS loading_bill (
-  loadingbill_id int PRIMARY KEY,
-  address varchar(100),
-  customer varchar(100),
-  truck_id int,
-  FOREIGN KEY (truck_id) REFERENCES truck (truck_id)
-);
-
-CREATE TABLE IF NOT EXISTS orders (
+-- Orders from customers.
+-- Keep in mind that the delivery_date may be NULL
+CREATE TABLE IF NOT EXISTS Orders (
   order_id int PRIMARY KEY,
   customer_id int,
-  product_id int,
-  quantity int,
-  order_date_time datetime,
-  FOREIGN KEY (customer_id) REFERENCES customers (customer_id),
-  FOREIGN KEY (product_id) REFERENCES products (product_id)
+  order_date date DEFAULT NOW(),
+  delivery_date date, -- Set when the order hits the truck
+  FOREIGN KEY (customer_id) REFERENCES customers(customer_id)
+  -- ...Perhaps more columns
 );
 
-CREATE TABLE IF NOT EXISTS blocked_products (
-  blocked_product_id int PRIMARY KEY,
-  product_id int,
-  blocked_date_time datetime,
-  FOREIGN KEY (product_id) REFERENCES products (product_id)
+--------------------------------------------
+-- Recipe/Cookie related tables
+--------------------------------------------
+
+-- Recipes for all the cookies (essentially a list of cookies)
+CREATE TABLE IF NOT EXISTS recipes (
+  recipe_id int PRIMARY KEY,
+  recipe_name varchar(100), -- Cookie name
 );
 
-CREATE TABLE IF NOT EXISTS pallet_traceability (
-  trace_id int PRIMARY KEY,
-  location varchar(100),
-  location_date datetime,
+-- "The company has a raw materials warehouse in which 
+--  all ingredients used in their production are stored."
+
+-- Describes ingredients and stock.
+-- Each ingredient has 'amount' of 'unit' in stock
+CREATE TABLE IF NOT EXISTS ingredients (
+  ingredient_id int PRIMARY KEY,
+  ingredient_name varchar(100),
+  amount int,
+  unit varchar(50),
+);
+
+-- Describes what ingredients goes into what recipe
+-- Each recipe requires 'amount' of 'ingredient'
+CREATE TABLE IF NOT EXISTS recipe_contents (
+  recipe_id int,
+  ingredient_id int,
+  amount int,
+  PRIMARY KEY (recipe_id, ingredient_id),
+);
+
+--------------------------------------------
+-- Pallet related tables
+--------------------------------------------
+
+-- Pallets are used to store cookies for delivery
+CREATE TABLE IF NOT EXISTS pallets (
+  pallet_id int PRIMARY KEY,
+  recipe_id int,
+  order_id int,
+  FOREIGN KEY (recipe_id) REFERENCES recipes(recipe_id),
+  FOREIGN KEY (order_id) REFERENCES Orders(order_id)
+);
+
+-- What does the pallet contain?
+CREATE TABLE IF NOT EXISTS pallet_contents (
   pallet_id int,
-  FOREIGN KEY (pallet_id) REFERENCES pallets_produced (pallet_id)
+  ingredient_id int,
+  amount int,
+  PRIMARY KEY (pallet_id, ingredient_id),
+  FOREIGN KEY (pallet_id) REFERENCES pallets(pallet_id),
+  FOREIGN KEY (ingredient_id) REFERENCES ingredients(ingredient_id)
 );
+
+-- Has an order been delivered?
+-- When the truck is loaded, a delivery is considered done
+CREATE TABLE IF NOT EXISTS delivery_bill (
+  delivery_id int PRIMARY KEY,
+  order_id int,
+  delivery_date date DEFAULT NOW(),
+  FOREIGN KEY (order_id) REFERENCES Orders(order_id)
+);

app/Migrations/0020-data.sql

@@ -1,4 +1,22 @@
 -- Inserts here
-INSERT INTO Customers (CustomerID, Name, Address) VALUES
-  (1, 'John Doe', '123 Main St'),
-  (2, 'Jane Smith', '456 Elm St');
+INSERT INTO
+  customers (customer_id, customer_name, customer_address)
+VALUES
+  (1, 'Bjudkakor AB', 'Ystad'),
+  (2, 'Finkakor AB', 'Helsingborg'),
+  (3, 'Gästkakor AB', 'Hässleholm'),
+  (4, 'Kaffebröd AB', 'Landskrona'),
+  (5, 'Kalaskakor AB', 'Trelleborg'),
+  (6, 'Partykakor AB', 'Kristianstad'),
+  (7, 'Skånekakor AB', 'Perstorp'),
+  (8, 'Småbröd AB', 'Malmö');
+
+INSERT INTO
+  recipes (name)
+VALUES
+  ('Nut ring'),
+  ('Nut cookie'),
+  ('Amneris'),
+  ('Tango'),
+  ('Almond delight'),
+  ('Berliner');