What type of database is focused specifically on accessing data for a single analytical purpose?

A data mart is specifically designed to cater to the needs of a particular business line or team, allowing for focused access to data for a single analytical purpose. It serves as a subset of a data warehouse, often containing a distinct data set that is relevant to specific analysis, such as marketing, sales, or financial reporting. By being tailored for specific analytical requirements, data marts enable users to quickly retrieve and analyze relevant data without the complexity often associated with larger data warehouses.

In contrast, a data warehouse is broader in scope, encompassing large volumes of historical data from across the organization to support corporate-wide business intelligence activities. A data dictionary serves a different purpose, acting as a repository of metadata that describes the structure of the data within databases rather than providing analytical functions. A data repository is a general term for a storage space for data, which does not imply the focused analytical purpose characteristic of a data mart. Thus, the unique focus of a data mart on single analytical objectives makes it the correct choice in this context.