title: How to create database within a database(postgres)?
body: <p>Actually I'm noob and stuck on this problem for a week. I will try explaining it.
  I have table for USER, 
  and a table for product
  I want to store data of every user for every product. Like if_product_bought, num_of_items, and all.</p>
  
  <p>So only solution I can think of database within database , that is create a copy of products inside user named database and start storing.</p>
  
  <p>If this is possible how or is there any other better solution
  Thanks in advance </p>