Data mart

<database> A type of data warehouse designed primarily to address a specific function or department's needs, as opposed to a data warehouse which is traditionally meant to address the needs of the organisation from an enterprise perspective. In addition, a data mart often uses aggregation or summarisation of the data to enhance query performance. However, it is important to maintain the ability to access the underlying base data to enable drill-down analysis as necessary.

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data link layer
data link level
Data Link Provider Interface
Data Management Language
Data Manipulation Language
data mart
data warehouse
data mining
data model
data modeling
data modelling