Which statement accurately reflects data requirements for a system?

The statement highlighting that the requirements must cover all data handled by the system, even if it is initiated and/or deleted outside the defined system, accurately reflects data requirements for a system. This is important because it ensures that all potential data interactions are considered, regardless of where those interactions occur. A comprehensive understanding of data requirements includes everything that impacts the system, including data that originates from external sources and may also be deleted externally.

This perspective helps in building a system that can manage, process, and secure data effectively while accounting for external influences. By understanding how external data affects the system, stakeholders can ensure that the system is robust and can handle a variety of use cases effectively. It also promotes better data governance, compliance, and user experience since all data handling scenarios are taken into consideration.

In contrast, focusing solely on data contained within the system or data that is specifically initiated or deleted within the system would lead to incomplete requirements. Such a limited view could overlook critical data interactions that occur outside the system, thereby compromising the integrity and functionality of the overall system.