Question

In a data flow diagram (DFD), a black hole is a process that has _____.

a. ​no output
b. ​at least one output and one input, but the output obviously is insufficient to generate the input shown
c. ​at least one input and one output, but the input obviously is insufficient to generate the output shown
d. ​no input

Answer 1

In a data flow diagram, a black hole is a process with no output, indicating a potential error or incomplete process in the system that requires further attention.

Step-by-step explanation:

In a data flow diagram (DFD), a black hole is a process that has no output. It represents an error or an issue in the diagram because, in a properly functioning system, a process should have both input and output. The black hole is a process where data enters, but nothing is shown to come out, which can indicate that the data is lost or the process is incomplete. This term is used to identify parts of a system that may need further analysis or correction.