Question C.3: Consider the data flow diagrams (DFD) in Figure C.3 where DS, DF, E, and P represent data store, data flow, external agent, and process respectively. List all the possible errors (rule violation) in the DFDs in all three levels. You may assume the bubbles in Level 1 DFD are the decomposition of the bubble P1 in Level 0, and so on. You may also assume every bubble in levels 0 and 1 will be further decomposed. (16%) Level 0 DS2 DF6 DF 2 DF4 E1 DF1 P1 P2 E2 DFO DF3 P3 DF5 E3 DS1 DF3 Level 1 DS2 DF6 DF2 DF1 P1.1 DF7 P1.2 DF9 P1.4 DF7 P1.3 DF8 Level 2 P1.4.2 DF11 DF12 DF9 P1.4.1 DF10 DF2 P1.4.3 DF8 Figure C.3: Data Flow Diagrams Question C.3: Consider the data flow diagrams (DFD) in Figure C.3 where DS, DF, E, and P represent data store, data flow, external agent, and process respectively. List all the possible errors (rule violation) in the DFDs in all three levels. You may assume the bubbles in Level 1 DFD are the decomposition of the bubble P1 in Level 0, and so on. You may also assume every bubble in levels 0 and 1 will be further decomposed. (16%) Level 0 DS2 DF6 DF 2 DF4 E1 DF1 P1 P2 E2 DFO DF3 P3 DF5 E3 DS1 DF3 Level 1 DS2 DF6 DF2 DF1 P1.1 DF7 P1.2 DF9 P1.4 DF7 P1.3 DF8 Level 2 P1.4.2 DF11 DF12 DF9 P1.4.1 DF10 DF2 P1.4.3 DF8 Figure C.3: Data Flow Diagrams