users テーブル

Column	Type	Options
email	string	null: false, unique: true
encrypted_password	string	null: false
name	string	null: false
profile	text	null: false
occupation	text	null: false
position	text	null: false

prototypes テーブル

Column	Type	Options
title	string	null: false
catch_copy	text	null: false
concept	text	null: false
user	reference	null: false, foreign_key: true

comments テーブル

Column	Type	Options
content	text	null: false
prototype	reference	null: false, foreign_key: true
user	reference	null: false, foreign_key: true