What is the best solution for a specific team in a large organization to access a tailored portion of its data warehouse while ensuring data security?

• A. Data lake
• B. Data mart
• C. Data cube
• D. Data archive

Answer: (B)

The best solution for a specific team in a large organization to access a tailored portion of its data warehouse while ensuring data security is a data mart. A data mart is a subset of a data warehouse that is designed to focus on a specific business line or team. It provides a targeted view of relevant data, ensuring that the specific needs of the team are met while maintaining the overall data security and integrity of the larger data warehouse.

Data marts allow organizations to tailor data access to meet the needs of different teams, thereby minimizing the risk of unauthorized access to sensitive information beyond what the specific team requires. They also facilitate faster query performance since they only contain the necessary data relevant to the specific business function or analysis, which promotes efficiency in data retrieval.

In contrast, a data lake is designed for storing vast amounts of unstructured data without specific organization or structure, which can complicate access and security for specialized teams. A data cube aggregates data across multiple dimensions for analysis, but it is not focused on access control or meeting the security needs of specific teams. On the other hand, a data archive is primarily for storing historical data that is not in active use and does not serve the purpose of providing specific teams with tailored access to a portion of current data.