Implement Time
> TB Months to years
< TB Months
Data Mart
Data Mart
Control: A department can completely control the data and processing that occurs inside a data mart. Cost: The cost of storage and processing is less, because the data mart’s machine is smaller than DW’s Customization: The data mart’s data is customized to suit the peculiar needs of the department.
Administration
Enterprise Data Warehouse
Enterprise data warehouses are funded on a corporate basis. Enterprise data warehouse covers the entire business (corporation), incorporating data from all operational systems. Information is extracted from the operational environment, cleansed, and transformed into a central, integrated enterprise-wide data warehouse environment, so that all the departments and other internal organizations of the corporation can benefit from a consistent, integrated source of decision support information.