// https://dbdiagram.io/d/
// Kraut&Rübel ERD

Table Customer {
  id string [primary key]
  first_name string
  last_name string
  street string
  birth_date timestamp
  house_number string
  postal_code integer
  email string
  phone integer
  city string
}

Table Order {
  id string [primary key]
  customer Customer
  invoice_amount integer
  order_date timestamp
}

Table Ingredient {
  id string [primary key]
  designation string
  stock integer
  net_price integer
  unit string
  carbonhydrates integer
  calories integer
  protein integer
}

Table Supplier {
  id string [primary key]
  city string
  street string
  email string
  phone string
  supplier_name string
  house_number string
  postal_code integer
}

Table Recipe {
  id string [primary key]
  preperation_time integer
  name string
  description string
  instructions string
}

Table RecipeContainsIngredients {
  recipe string [primary key]
  ingredient string [primary key]
  amount integer
}

Table SupplierContainsIngredients {
  supplier string [primary key]
  ingredient string [primary key]
  delivery_cost integer
  delivery_time integer
}

Table OrderContainsIngredients {
  order string [primary key]
  ingredient string [primary key]
  quantity integer
}

Ref: Order.customer > Customer.id
Ref: SupplierContainsIngredients.supplier > Supplier.id
Ref: SupplierContainsIngredients.ingredient > Ingredient.id
Ref: OrderContainsIngredients.order > Order.id
Ref: OrderContainsIngredients.ingredient > Ingredient.id
Ref: RecipeContainsIngredients.recipe > Recipe.id
Ref: RecipeContainsIngredients.ingredient > Ingredient.id