Table tv_show {
  show_id integer [pk]
  title varchar [not null]
  runtime integer [not null]
  popularity integer [not null, default: 0]
  created_at timestamp [not null, default: `now()`]
  updated_at timestamp [not null, default: `now()`]

  
  indexes {
    show_id
    title
    updated_at
  }
}

Table episodes {
  episode_id integer [pk]
  tv_show_id integer [not null]
  season_number integer [not null]
  title varchar [not null]
  number int [not null]
  aired date [not null]
  avg_rating decimal [not null]
  votes int [not null]
 
  indexes {
    avg_rating
  }
}

Ref: "tv_show"."show_id" < "episodes"."tv_show_id"