data mart


data mart

(database)A type of data warehouse designed primarily toaddress a specific function or department's needs, as opposedto a data warehouse which is traditionally meant to addressthe needs of the organisation from an enterprise perspective.In addition, a data mart often uses aggregation orsummarisation of the data to enhance query performance.However, it is important to maintain the ability to access theunderlying base data to enable drill-down analysis asnecessary.

data mart

A subset of a data warehouse for a single department or function. A data mart may have tens of gigabytes of data rather than hundreds of gigabytes for the entire enterprise. See data warehouse.