title: Database structure of Facebook to store comments and post?
body: <p>I'm going to create simple social networking site.
  so... I want to know that how Facebook store comments for posts.</p>
  
  <p>is Facebook store Posts and its comments in same database table row,
  then how they store a long list of comments in a one table row field.
  or is it have each database table for each post, so that can make the comments for that post in that table row.</p>
  
  <p>What is the best database structure for a simple social network site like CMS.
  but it could be handle a large amount of users.</p>
  
  <p>Please help me in this matter.
  Thanks.</p>