class CreateAdmissions < ActiveRecord::Migration[7.0]
  def change
    create_table :admissions do |t|
      t.references :country, null: false, foreign_key: true
      t.references :person, null: false, foreign_key: true
      t.references :previous, null: true, foreign_key: { to_table: :admissions }

      t.date :arrived_on, null: false

      t.timestamps
    end
  end
end