Database Schema

users

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

coins

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

• index on email, unique: true
• index on session_token, unique: true

trades

column name	data type	details
id	integer	not null, primary key
quantity	float	not null
type	string	'buy' or 'sell'
price	float	not null
user_id	integer	not null, indexed
coin_id	integer	not null, indexed
created_at	datetime	not null
updated_at	datetime	not null

• index on user_id
• index on 'coin_id'

follow_list

column name	data type	details
id	integer	not null
'user_id	integer	not null, indexed
created_at	datetime	not null
updated_at	datetime	not null

• index on user_id

follow_list_coins

column name	data type	details
id	integer	not null
'follow_list_id	integer	not null, indexed
'coin_id'	integer	not null, indexed
created_at	datetime	not null
updated_at	datetime	not null

• index on follow_list_id
• index on coin_id

portfolio

column name	data type	details
id	integer	not null
`user_id	integer	not null, indexed
created_at	datetime	not null
updated_at	datetime	not null

• index on user_id

portfolio_coins

column name	data type	details
id	integer	not null
'portfolio_id	integer	not null
'coin_id'	integer	not null
created_at	datetime	not null
updated_at	datetime	not null

• index on portfolio_id
• index on coin_id