Data Warehousing integrates data and information collected from various sources into one comprehensive database.
For example, a data warehouse might combine customer information from an organization's point-of-sale systems, its mailing lists, website, and comment cards.
The SAS System provides a data warehouse model that addresses the entire scope of warehouse management, organization, and exploitation.
It is a comprehensive model, supported by a broad array of products.
Figure 1.3 shows the SAS Data Warehouse Model.
The key features of a data warehouse include the following: Subject-Oriented: It provides information catered to a specific subject instead of the organization's ongoing operations.
Examples of subjects include product information, sales data, customer and supplier details, etc.