Which statement correctly describes the difference between a data warehouse and a data mart?

• A. Data warehouse stores enterprise data for reporting; data marts are focused, smaller data stores for specific business lines or departments.
• B. Data warehouse stores enterprise data for reporting; data marts store all enterprise data for cross-functional analysis.
• C. Data marts store enterprise data for reporting; data warehouse stores departmental data.
• D. Data warehouse is a subset of data mart.

Answer: (A)