Sources/sinks are sometimes referred to as external entities because they are outside the system.
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Q17: A data flow diagram (DFD)is a picture
Q18: A _ can be best understood as
Q19: A _ is the origin and/or destination
Q20: Flowcharting has been criticized by proponents of
Q21: According to the DFD guidelines,the inputs to
Q23: The information system is depicted as a
Q24: Which characteristics of sources and sinks are
Q25: Compare and contrast DFDs and flowcharts.
Q26: A data flow is data that move
Q27: Data cannot move directly from a source
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