Question

How is the central transformation decided in a data-processing system?

a.

By choosing the dummy root element

b.

By tracing the input through the DFD until it can no longer be considered input

c.

By tracing the output through the DFD until it can no longer be considered output

d.

Both b and c

Posted under Software Engineering

Answer: (d).Both b and c Explanation:The central transformation in a data-processing system is decided by tracing the input through the DFD until it can no longer be considered input and tracing the output through the DFD until it can no longer be considered output. The bubble in between acts as the central transformation.

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