What is the difference between a Data Warehouse and a Data Mart?

What is the difference between a Data Warehouse and a Data Mart?

Approach: Compare scope and organizational use.

A Data Warehouse is an enterprise-wide repository of integrated data. A Data Mart is a subset of the data warehouse focused on a specific department or business line (e.g., Marketing).

Follow-up: Which is easier to implement first?

Key concepts: enterprise-wide, department-specific.