Labels:book | earth | hakham | monitor | plant | railing | sky | workwear OCR: INFORMATION SYSTEMS ANALYSIS AND DESIGN 5 7 3 What does DFD look like? In completed DFD data flow arrows FIGURE 10-24 show the path of data to and from external entities, data stores, and To read DFD begin at any one processes. Figure 1024 explains how to read a DFD of the square entities and follow the arrows to trace the flow of Workshop data. The label on each data schedule flow arrow identifies the data that moves through the system. Arrows moving into process Workshop Workshop indicate input data Arrows that schedule schedule emerge from process show output. Rectangular data stores represent data stored on com- puter disks and in databases Workshop request Enroll studen Workshop Schecule Courses Registrar Student enrollment workshops Workshop Student enrollees Workshop schedule enroll ...
