Computer Science Illuminated
7th Edition
ISBN: 9781284155617
Author: Nell Dale, John Lewis
Publisher: Jones & Bartlett Learning
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Chapter 18, Problem 47E
Program Plan Intro
Software verification activities:
Software life cycle is the concept in which software is developed and coded, and it has evolved over the time.
- Testing is a part of the process in the design phase and implementation phase to identify the errors in the design and the code.
- If the error is found out in the early stages of the design process, it can be corrected at a cheaper cost. If it is undetected, it costs more to rectify it.
- Because testing is a time consuming method to find out the errors in later stage, there are two software verification activities to identify the errors before testing.
- The two software verification activities are effectively used by the
programming teams during the design or code. They are:- Walk-through
- Inspections
- The motivation of the above two techniques is that moving the responsibility of undetected errors from the individual programmer to the group.
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I need help creating the network diagram and then revising it for the modified activity times.
Activity No.
Activity
Time (weeks)
Immediate Predecessors
1
Requirements collection
3
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Requirements structuring
4
1
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Process analysis
3
2
4
Data analysis
3
2
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Logical design
50
3,4
6
Physical design
5
5
7
Implementation
6
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c. Using the information from part b, prepare a network diagram. Identify the critical path.
Given the following Extended-BNF grammar of the basic mathematical expressions:
Show the derivation steps for the expression: ( 2 + 3 ) * 6 – 20 / ( 3 + 1 )
Draw the parsing tree of this expression.
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Computer Science Illuminated
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