A __________ is a subset of a database or data warehouse usually created for a specific analytic purpose.

• A. Data Mart
• B. Data Lake
• C. Data Set
• D. View

Answer: (C)

A data mart is a focused subset of a data warehouse designed for a specific analytic purpose. It collects and organizes the data most relevant to a particular business line, function, or department, making it faster and easier to perform targeted analyses, reporting, and decision-making.

A data lake stores vast amounts of raw data from many sources, not a curated subset for a specific analysis. A view is a saved query that presents data from underlying tables on demand rather than a stored subset. A data set is a general term for a collection of data, not necessarily a curated slice of a warehouse for a particular analytic purpose.