Schema

users

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

servers

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

• creator_id foreign key reference to user who created the server

channels

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

• server_id foreign key reference to server holding the channel
• author_id foreign key reference to user who wrote the message

messages

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

• channel_id foreign key reference to the channel that holds the message
• author_id foreign key reference to the user who created the message

joins

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