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, 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

Photos

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

• index on title
• index on photographer_id
• photographer_id references users
• gallery_id references galleries

Follows

column name	data type	details
id	integer	not null, primary key
photographer_id	integer	not null, indexed, foreign_key
follower_id	integer	not null, indexed, foreign key
created_at	datetime	not null
updated_at	datetime	not null

• user_id references users
• follower_id references users

Comments

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

• commenter_id references users
• photo_id references photos
• index on photo_id
• index on commenter_id

Likes

column name	data type	details
id	integer	not null, primary key
photo_id	integer	not null, indexed, foreign_key
liker_id	integer	not null, indexed, foreign key
created_at	datetime	not null
updated_at	datetime	not null

• photo_id references photos
• liker_id references users
• index on photo_id
• index on liker_id

Categories

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

• photo_id references photos
• index on photo_id

Photo_categories

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

• photo_id references photos
• category_id references categories
• index on photo_id
• index on category_id

Gallery_photos

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

• photo_id references photos
• gallery_id references galleries
• index on photo_id
• index on gallery_id

Galleries

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

• owner_id references users
• index on title, unique: true
• index on photo_id
• index on owner_id