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Pearson BTEC International Level 3 Qualifications in Information Technology –
Specification – Issue 3 – September 2022 © Pearson Education Limited 2022
67
A6 Quality of software applications
How the design and implementation of a software application affects quality, including:
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efficiency/performance, e.g. the system resources consumed by the program,
CPU cycles, processor time, memory space, accessing storage media
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maintainability, e.g. ease with which a program can be modified by its present or
future developer in order to carry out corrective, perfective or adaptive maintenance
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portability, e.g. range of computer hardware, operating systems and platforms
on which the source code can be run/compiled/interpreted
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reliability, e.g. accuracy and the consistency of its outputs
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robustness, e.g. quality of coding and testing to ensure that extreme and
erroneous data can be processed without causing the program to crash
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usability, e.g. ease with which an end user can use the program.
Learning aim B: Design a software solution to meet client requirements
B1 Software development life cycle
Application of the software development life-cycle stages, including:
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assessment of the requirements for an identified problem
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design specification, e.g. scope, inputs/outputs, user interface, timescales
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develop code
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implementation
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test, e.g. white box and black box testing, refinement, optimisation
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maintenance, e.g. corrective, adaptive and increased functionality.
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