librarix/db/migrations/0001_create_database.rb

Sequel.migration do
  change do
    create_table(:genres) do
      primary_key :id
      String :name, null: false
    end

    create_table(:movies) do
      primary_key :id
      String :data, text: true, null: false
      FalseClass :added, null: false, default: false
      FalseClass :viewed, null: false, default: false
      FalseClass :downloaded, null: false, default: false
    end

    create_join_table(movie_id: :movies, genre_id: :genres)
  end
end