Answer:
The logical diagrams must show the data flow directions.
Step-by-step explanation:
Logical diagrams are depicted with data flow diagrams. Data flow diagrams (DFD) use standardized symbols or notations, including rectangles, circles, arrows, and short-text labels, to describe a business system or process' data flow direction, data inputs, data outputs, data storage points, and its various sub-processes. Therefore, this summary implies that data flow diagrams are broadly divided into two: logical and physical data flow diagrams. The logical DFD concentrates on the business events and the data required for each event. The physical DFD depicts how the data system will work, such as the hardware, software, paper files, and people involved.