A database warehouse is an electronic storage system which contains all the data related to a business – from customer information and sales records, to employee data and financial details. The warehouse stores this data so it can be accessed quickly and efficiently for analysis and reporting purposes. This data is then organized into categories, making it easier for businesses to understand the impact their activities have on their bottom line. By building a comprehensive picture of their customers, products, and operations, businesses can use the data warehouse to make better-informed decisions and keep ahead of the competition.