How long data can be stored in data warehouse?

Moreover, how is data stored in a data warehouse?

Data is typically stored in a data warehouse through an extract, transform and load (ETL) process, where information is extracted from the source, transformed into high-quality data and then loaded into a warehouse.

Similarly, it is asked, what is a data warehouse used for?

Data warehouses are used for analytical purposes and business reporting. Data warehouses typically store historical data by integrating copies of transaction data from disparate sources. Data warehouses can also use real-time data feeds for reports that use the most current, integrated information.

A data warehouse essentially combines information from several sources into one comprehensive database. For example, in the business world, a data warehouse might incorporate customer information from a company's point-of-sale systems (the cash registers), its website, its mailing lists and its comment cards.