@startuml

entity Customer {
  *id: integer
  first_name: text
  last_name: text
}
entity Product {
  *id: integer
  sku: text
  product_name: text
  product_code: text
  quantity: integer
  price: decimal
}
entity Order {
  *id: integer
  customer_id: integer
  product_id: integer
  quantity: integer
  order_total: decimal
}
entity Region {
  *id: integer
  name: text
  label: text
}
Product }|--|{ Region
Order }|--|| Customer
Order }|--|| Product

@enduml