The purpose of creating Data Flow Diagram (DFD) symbols is to visually represent the flow of data within a system or process. By using standardized symbols, DFDs help in understanding the complex relationships between different components, processes, and data sources, making it easier to identify potential problems, analyze systems, and design more efficient processes. In essence, DFD symbols serve as a systematic and graphical communication tool that helps analysts, developers, and stakeholders gain clarity on system functionality and optimize its performance.