What are the four main components of a dataflow diagram, Computer Engineering

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What are the four main components of a dataflow diagram

Problem

1. What are the three main objectives of a dataflow diagram?

2. What are the four main components of a dataflow diagram?

3. Notice that the processes in a DFD are represented by circles and the terminators are represented by rectangles. Do you think this is significant? What if the processes were represented by rectangles and the terminators were represented by circles?

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