The following data flow diagram has three agents (A1, A2, A3), two processes (P1, P2), and two database tables (T1, T2). Identify and list the errors that you see in the DFD. (4-18)
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- Data stores (tables) cannot exchange data directly with other data stores; they must be read/written by processes. - Every process should have at least one incoming data flow and at least one outgoing data flow (it must transform input to output). - Every data Show more…
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