title: what would be a good database schema for an extremely simple chat in NoSQL?
body: <p>There's a good <a href="https://stackoverflow.com/questions/3094495/db-schema-for-chats">existing answer</a> on a basic schema in SQL. </p>
  
  <p>I can understand it, it's very straightforward. We have a user table, a chat table, and a chat_line table (which in a sane world would be called messages).</p>
  
  <p>I'm rather new to NoSQL, and my mind is still used to "normal" SQL schemes, and I'm trying to understand what would be the correct schema for a chat app in NoSQL (like mongo, or whathaveyou).</p>
  
  <p>I'm talking the simplest form, between one user to another, nothing special - no file messages, no pictures, no group chats. Just text.</p>