Final answer:
There can be multiple correct Data Flow Diagrams (DFDs) for any given system, as they may represent different aspects or levels of abstraction. Similar to diagrams in economics, recognizing the underlying logic and patterns is more crucial than memorizing specific DFDs.
Step-by-step explanation:
The question asks whether there can be only one correct logical Data Flow Diagram (DFD) for any given system. The DFD is a graphical representation of the flow of data through an information system. It is important to note that while a DFD shows how data moves within a system, it does not prescribe the physical system design. Therefore, depending on the level of detail and the aspects of the system that are being focused on, there can be multiple correct DFDs for the same system. Each of these DFDs might represent the system from a different perspective or at a different level of abstraction.
Creating a DFD is not about memorizing a fixed template, but about understanding the underlying logic and pattern of data flow within the system. This is similar to the study of economics, where recognizing the common underlying logic and pattern in different diagrams is more important than memorizing each specific diagram. Just like in economics, where different diagrams might represent the same market conditions in different ways, in systems analysis, different DFDs might represent the same system’s data flow from different perspectives.