# -*- encoding : utf-8 -*- class CreateAnswerSets < ActiveRecord::Migration def change create_table :answer_sets do |t| t.references :question_set t.references :survey_item_answer t.text :content t.boolean :is_checked t.integer :position t.timestamps end add_index :answer_sets, :question_set_id add_index :answer_sets, :survey_item_answer_id end end