How can DFDs be used as an analysis tool?

Data Flow Diagrams (DFDs) serve as a powerful analysis tool by visually representing the flow of data within a system, highlighting how information moves between processes, data stores, and external entities. They help identify inefficiencies, redundancies, and potential areas for improvement, making it easier to understand system functionalities and requirements. By simplifying complex processes into clear diagrams, DFDs facilitate better communication among stakeholders and aid in validating system designs before implementation.