Database Schema

Database 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

messages

column name	data type	details
id	integer	not null, primary key
content	string	not null
receiverable_id	integer	not null, indexed
receiverable_type	string	not null, indexed [users, channel]
owner_id	integer	not null, indexed
created_at	datetime	not null
updated_at	datetime	not null

• polymorphic between channel table and users table.