Data Mart
A data mart is a subset of a data warehouse that is focused on a specific business line, department, or subject area, such as sales, finance, or marketing. It is designed to provide users with easy access to relevant data for analysis and reporting, often optimized for performance and tailored to specific user needs. Data marts can be built from a data warehouse or directly from source systems, and they typically contain summarized or aggregated data to support decision-making processes.
Developers should learn about data marts when working on business intelligence (BI) or data analytics projects that require targeted data access for specific teams or functions. They are useful in scenarios where departments need quick, efficient querying without the complexity of a full data warehouse, such as generating sales reports or analyzing marketing campaigns. Implementing data marts can improve query performance, reduce data redundancy, and enhance user satisfaction by providing focused data views.