Several sources make a distinction between a “Data Mart” and a “Data Warehouse”. The simplest way of thinking of these two different data applications is from the real-world structures where they get their names. A “Data Warehouse” like an actual warehouse, is where we store our inventory of valuable data, and not accessed directly by our customers. A “Data Mart” like an actual store or market, is an application that has customer ready data and reports for easy use and accessibility by specific customers: individuals, groups or departments. Based on this understanding describe the value each has for a business and some factors in how they are used that make the design and data structures very different challenges. Also, in what ways do they work together and rely on each other?