Postgres Database Schema

users

column name	data type	details
id	integer	not null, primary key
username	string	not null, indexed, unique
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 session_token, unique: true

tracks

column name	data type	details
id	integer	not null, primary key
title	string	not null, indexed
uploader_id	integer	not null, indexed, foreign key
created_at	datetime	not null
updated_at	datetime	not null

• uploader_id references users
• index on title
• index on uploader_id

comments

column name	data type	details
id	integer	not null, primary key
body	string	not null
commenter_id	integer	not null, indexed, foreign key
track_id	integer	not null, indexed, foreign key
created_at	datetime	not null
updated_at	datetime	not null

• commenter_id references users
• track_id references tracks
• index on commenter_id
• index on track_id