ICT2621 Structured Systems Analysis and Design
University of South Africa (Unisa)
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ICT2621 ASSIGNMENT 3 2023 SOLUTIONS
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---10July 20232022/2023
- 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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ThinkLab
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ICT2621 2023 Assignment 3 solution
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--118July 20232022/2023
- ICT2621 2023 Assignment 3 solution 
Questions: 
Question 1 
NB: When drawing data flow diagrams (DFDs), use the Gane and Sarson 
symbols/notation set. 
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 Levelling(2) 
1.2.2 Balancing(2) 
1.2.3 Data dictionary(2)1.3 Draw a diagram of an example of each of the following showing the process, and the 
input(s...
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CrystalIndigo