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ICT2621 ASSIGNMENT 3 2023 SOLUTIONS

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  • Course
  • ICT2621 - Structured Systems Analysis And Design (ICT2621)
  • Institution
  • University Of South Africa (Unisa)

This document contains all the answers to the term explanation questions and also an alternative answer to every question. The essay summary is structured in a way that eveey point is illustrated in my summary.

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  • July 12, 2023
  • 10
  • 2022/2023
  • Other
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  • ict2621 assignment 3 2023 solutions

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  • University of South Africa (Unisa)
  • ICT2621 - Structured Systems Analysis And Design (ICT2621)
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ICT2621

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ASSIGNMENT 3
Question 1 [16]
NB: When drawing data flow diagrams (DFDs), use the Gane and Sarson
symbols/notation.

1.1 Draw, name and describe the four symbols used in a data flow diagram
(DFD). You may use a table to present your answer. (6)




1.2 Briefly describe the following with respect to DFDs:
1.2.1 Process description
(2)
The process of drawing a series of increasingly detailed diagrams
(DFDs) until all function primitives are identified (or … to reach the
desired level of detail).
1.2.2 Balancing
(2)
It maintains consistency among a set of DFD by ensuring that input and
output data flows align properly.
Or
A process used to maintain consistency among an entire series of
diagrams, including input and output dataflow, data definitions and
process descriptions.

1.3 Draw a diagram of an example of each of the following showing the
process, and the input(s) and output (s), where applicable. You should
name each process, input or output used. Do not use the examples from
the prescribed test book rather use them as guidelines.
1.3.1 Spontaneous generation (3)
1.3.2 BLACKHOLE (3)

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