Understanding Logical DFD vs. Physical DFD: When and Why We Need Them
Introduction Data Flow Diagrams (DFDs) are powerful tools used in system analysis and design to visually represent the flow of data within a system. They help in understanding and documenting the processes, data stores, and data movement within a system. Two main types of DFDs, Logical DFDs and Physical DFDs, serve distinct purposes in the development lifecycle, each playing a crucial role in the design and implementation of a system. Logical DFD Logical DFDs focus on the logical relationships and processes within a system without delving into the technical implementation details. These diagrams…continue reading →