class CreateCountries < ActiveRecord::Migration[7.0]
  def change
    create_table :countries do |t|
      t.string :name, null: false
      t.string :iso2, limit: 2, null: false
      t.string :iso3, limit: 3, null: false

      t.timestamps
    end

    add_index :countries, :name, unique: true
    add_index :countries, :iso2, unique: true
    add_index :countries, :iso3, unique: true
  end
end