Schema

Postgres Database Schema

users

Column Name	Data Type	Details
id	integer	not null, primary key
first_name	string	not null
last_name	string	not null
username	string	not null, indexed, unique
email	string	not null, indexed, unique
password_digest	string	not null
session_token	string	not null, indexed, unique
buying_power	integer
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 :assets association with assets table on user_id
• has_many :owned_stocks through assets
• has_many :watchlists association with wacthlists table on user_id

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stocks

Column Name	Data Type	Details
id	integer	not null, primary key
name	string	not null, indexed, unique
tikr	string	not null, indexed, unique
last_price	decimal	not null
percentage_change	decimal	not null
created_at	datetime	not null
updated_at	datetime	not null

• index on name, unique: true
• index on tikr, unique: true
• has_many :assets association with assets table on stock_id
• has_many :owners through assets source owner

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assets

Column Name	Data Type	Details
id	integer	not null, primary key
user_id	integer	not null
stock_id	integer	not null
quantity	integer	not null
avg_price	integer	not null
created_at	datetime	not null
updated_at	datetime	not null

• user_id references users
• stock_id references stocks
• belongs_to :owner association with users table on user_id
• belongs_to :stocks association with stocks table on stock_id

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watchlists

Column Name	Data Type	Details
id	integer	not null, primary key
title	string	not null
user_id	integer	not null
created_at	datetime	not null
updated_at	datetime	not null

• user_id references users
• belongs_to :user association with users table on user_id
• has_many :watchlists association with wacthlist_joins on watchlist_id
• has_many :stocks through watchlists

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watchlist_joins

Column Name	Data Type	Details
id	integer	not null, primary key
watchlist_id	integer	not null
stock_id	integer	not null
created_at	datetime	not null
updated_at	datetime	not null

• watchlist_id references watchlist
• stock_id references stocks

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