Please make it as simplified as possible Thank you

You are the IT director at Big Ten University. As part of a training program, you decide to draw a DFD that includes some obvious mistakes to see whether your newly hired junior analysts can find them. You came up with the diagram O DFD shown in Figure 5-19. Based on the rules explained in this chapter, how many problems should the analysts find? STUDENT ID NUMBER MEET WITH ADVISOR TENTATIVE SCHEDULE ASSIGN ADVISOR CHECK OPEN CLASSES FINAL CLASS SCHEDULE DS CLASS ROSTER CLASS ROSTER INSTRUCTOR STUDENTS ATTENDING DB SEATING CHART SCHEDULE OF OFFICE HOURS STUDENT ID NUMBER FINAL GRADE CALCULATE GRADE STUDENT D4 GRADES FIGURE 5-19 What are the mistakes in this diagram 0 DFD