There are at least seven stages to the creation of a data warehouse, according to ITPro Today, an industry publication. They include: Determining the business objectives and its key performance indicators. Collecting and analyzing the appropriate information. Identifying the core business processes that contribute the key data. Constructing a conceptual data model that shows how the data are displayed to the end-user. Locating the sources of the data and establishing a process for feeding data into the warehouse. Establish a tracking duration. Data warehouses can become unwieldy. Many are built with levels of archiving, so that older information is retained in less detail. Implementing the plan.