Operational Data Store

The term Operational Data Store (ODS ) comes from the information management in business.

An operational data store is a database that enables the integration of data from one or more data sources. For this, the relevant data from the data sources are extracted and adjusted, if necessary due to redundancies and injured constraints and transformed. The Operational Data Store data for usually timely evaluations are provided, which are not or only hardly possible in the source systems. An application example is the quotation in response to timely market prices.

William H. Inmon defines an operational data store as follows:

"An operational data store is a subject - oriented, integrated, volatile, current -valued, detailed -only collection of data in support of an organization 's need for up-to- the-second, operational, integrated, collective information. "

" An Operational Data Store is a topic- oriented, integrated, non-persistent or non-persistent detailed collection of data to support an organizational unit with its requirement for current, operational, integrated and holistic information."

Thereafter, a Operational Data Store from the data warehouse differs by the lack of historical data and more frequent updates as well as a finer data granularity.

With the trend toward real-time data warehouse and powerful database management systems is likely the Operational Data Store to rise in the data warehouse.