Editing Data warehouse (section)

== Components ==
The environment for data warehouses and marts includes the following:

* Source systems of data (often, the company's operational databases, such as relational databases<ref name="rainer2012" />);
* Data integration technology and processes to extract data from source systems, transform them, and load them into a data mart or warehouse;<ref name="rainer2012" />
* Architectures to store data in the warehouse or marts;
* Tools and applications for varied users;
* Metadata, data quality, and governance processes. Metadata includes data sources (database, table, and column names), refresh schedules and data usage measures.<ref name="rainer2012" />