Final answer:
A Data flow diagram (DFD) is used alongside a data dictionary to produce a logical system model, with details on design architecture, material and component sourcing, and mathematical modeling of system performance.
Step-by-step explanation:
A Data flow diagram (DFD) is a graphical representation of the flow of data through an information system. It serves as a valuable tool in the analysis phase of the system development lifecycle, helping to describe the processes involved and the movement of information. When a set of DFDs is used to create a logical model of the system, the specifics of those diagrams are often detailed in a separate document known as a data dictionary. The data dictionary acts as a compendium of all the elements of the analysis, including the definition of all data elements, their relationships, and usage.
The design process also entails understanding the source and composition of components, specifying materials, and deciding whether parts will be sourced externally or created in-house. This detailed level of design will include schematics and code for electrical subsystems and embedded assembly processes. Additionally, in more complex systems, a design architecture is essential. This architechture defines the assignment of product functions to the physical components making up the product.
Furthermore, a mathematical model often supplements the design by illustrating relationships between system properties, which can be represented visually through two-dimensional data plots. These plots typically have a horizontal axis (x) for the independent variable and a vertical axis (y) for the dependent variable, thereby allowing the examination of the system's performance and effectiveness based on this mathematical connection.