A supermarket in New York wants to mine data from social media sites and offer coupons and promotions to its customers. In order to do this it plans to deploy a data reservoir which will contain…

A supermarket in New York wants to mine data from social media sites and offer coupons and promotions to its customers. In order to do this it plans to deploy a data reservoir which will contain data from Facebook, Twitter, and Pinterest as well as data from the supermarket's POS system. They would like to deploy a solution where they do not have to define a database schema before loading data. What should be the recommended solution?