type of data where house

Types of Data Warehouse
There are mainly three type of Data Warehouse.................

1). Enterprise Data Warehouse.
2). Operational data store.
3). Data Mart.

Enterprise Data Warehouse provide a control Data Base for decision support through out the enterprise.

Operational data store has a broad enterprise under scope but unlike a real enterprise DW. Data is refreshed in rare real time and used for routine business activity.

Data Mart is a sub part of Data Warehouse. It support a particular reason or it is design for particular lines of business such as sells, marketing or finance, or in any organization documents of a particular department will be data mart

Data Marts: