generate_commands.sh

#Y ou could write this
bin/rails generate migration CreateComponentsTable name:string local_id:string description_en:text description_jp:text
# and do so for all the fields outlined in the issue

# then do the same for Artist
bin/rails generate migration CreateArtistsTable name_en:string name_jp:string local_id:string viaf_id:string

# There a few fields that are references to another field. Like The user who created a component of a work.
# To add a reference to another Model, like Artist in Component
bin/rails generate migration AddArtistRefToComponents artist:references

migration.rb

class CreateComponentsTable < ActiveRecord::Migration[5.0]
  def change
    create_table :components do |t|
      t.string :name
      t.string :local_id
      t.text :description_en 
      t.text :description_jp
      # ...
      t.timestamps
    end
  end
end