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Data & Analytics · Foundational

Data Mart

A subset of a data warehouse focused on one business area or department, such as sales or finance.

Definition

Dependent data marts are fed from an enterprise data warehouse, while independent data marts load directly from sources and risk silos. Kimball's bus architecture builds the warehouse from conformed data marts.

Exam tip

A data mart serves a single department; 'smaller and faster to build' are its usual advantages.

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