What is the name of the process that involves creating detailed DFDs to show system functionality?

The process of creating detailed Data Flow Diagrams (DFDs) to show system functionality is known as leveling. This step is essential in systems analysis because it involves breaking down high-level diagrams into more detailed representations. Leveling allows analysts to clarify how different components of the system interact, ensuring that processes and data flows are accurately depicted at various levels of abstraction.

Through leveling, the system is represented in a hierarchical manner, where each level of DFD presents increasingly detailed views of the system’s processes and data exchanges. This detailed representation is crucial for understanding the intricacies of the system, aiding in effective communication among stakeholders and facilitating the identification of requirements and potential issues.

The other options represent distinct concepts within the systems analysis and design context but do not specifically refer to the process of creating detailed DFDs. Refinement typically refers to the broader act of improving design elements or processes, delineation involves outlining or detailing boundaries, and detailing itself can refer to various aspects of design but does not capture the systematic breakdown characteristic of leveling.