Database Schema

Postgres Database Schema

users

column	data type	details
id	integer	not null, primary key
username	string	not null, indexed, unique
name	string	not null
password_digest	string	not null
session_token	string	not null, indexed, unique
created_at	datetime	not null
updated_at	datetime	not null

• index on username, unique: true
• index on email, unique: true
• index on session_token, unique: true
• has_many pins
• has_many boards
• has_many followers
• has_many followings

boards

column	data type	details
id	integer	not null, primary key
name	string	not null
user_id	integer	not null, indexed, foreign_key
created_at	datetime	not null
updated_at	datetime	not null

• index on user_id
• has_many pins
• belongs_to user

pins

column	data type	details
id	integer	not null, primary key
title	string	not null
user_id	integer	not null, indexed, foreign_key
description	body
created_at	datetime	not null
updated_at	datetime	not null

• index on user_id
• belongs_to user

comments

column	data type	details
id	integer	not null, primary key
user_id	integer	not null, indexed, foreign_key
pin_id	integer	not null, indexed, foreign_key
text	body	not null
created_at	datetime	not null
updated_at	datetime	not null

• index on user_id
• index on pin_id
• belongs_to user
• belongs_to pin

follows(bonus)

column	data type	details
id	integer	not null, primary key
follower_id	integer	not null, indexed, foreign_key
following_id	integer	not null, indexed, foreign_key
created_at	datetime	not null
updated_at	datetime	not null

• index on follower_id
• index on following_id
• index on [:follower_id, :following_id], unique: true
• belongs_to user