DB design

users table

Column	Type	Options
nickname	string	null: false, index:true
email	string	null:false, unique: true, foreign_key:true

Association

• has_many :tweets
• has_many :comments

tweets table

Column	Type	Options
text	text	null: false
image	text	null:falsee
user_id	reference	null:false, foreign_key: true

Association

• has_many :comments
• belongs_to :user

comments table

Column	Type	Options
text	text	null: false
user_id	reference	null:falsee, foreign_key: true
tweet_id	reference	null:false, foreign_key: true

Association

• belongs_to :tweet
• belongs_to :user