Schema - ZIP78/instagram-clone- GitHub Wiki

users

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

posts

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

• user_id references users
• index on user_id

likes

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

• user_id references users
• post_id references posts
• index on [:post_id, :user_id], unique: true

comments

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

• user_id references users
• post_id references posts
• index on [:photo_id, :user_id]

following

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

• followee_Id references users
• post_id references posts
• index on [:followee_Id, :follower_id], unique: true