Table follows {
  following_user_id integer
  followed_user_id integer
  created_at timestamp
}

Table users {
  id integer [primary key]
  username varchar
  role varchar
  created_at timestamp
}

Table posts {
  id integer [primary key]
  title varchar
  body text [note: 'Content of the post']
  user_id integer [not null]
  status varchar
  created_at timestamp
}

Ref user_posts: posts.user_id > users.id // many-to-one

Ref: users.id < follows.following_user_id

Ref: users.id < follows.followed_user_id