title: MySQL(RDBMS) for order/shipping info and MongoDB(NoSQL) for product info. Can this work?
body: <p>I am trying to build an integrated commerce backend, where multiple ecommerce channels can be connected. This service has two main functions:
  1. It brings all the orders from all the connected commerces together.
  2. Manager registers the new product to our service once. Then our service registers this product to all the connected commerces.</p>
  
  <p>I am planning to use MySQL as my main database. But, when it comes to product info, Im not sure if MySQL(or any other RDBMS) would be a clever choice. Because each commerce most likely require some other new info. I dont want to add columns or make new table every time we add new commerces to our platform.</p>
  
  <p>So I thought I could use MongoDB( NoSQL) when related to products and use MySQL when related to orders. Would this be a good idea? Im worried about querying limits and any other potential problems which I might encounter.</p>
  
  <p>By the way I am using node.js for my backend.</p>