Draw an FDD of the portal system website for Trident University. Your FDD must consist of 3 levels. Write your assumptions, if any. Draw a context diagram and a diagram 0 DFD that represents the registration system at your school or an imaginary school. Next, you draw a Level 1 DFD exploding the students record external entity (agent) and decompose it into processes, data stores, and data flows, using the symbols in Figure 2-10.