Sqa

Sqa

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  Software Quality Assurance(SQA)
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  To be discussed ●Element of SQA ● Statistical SQA ● Software Reliability ● Vocabulary: Software, quality, Software quality, assurance, Statistics, Pareto principle, Capability Maturity Model (CMM) and ISO 9000 ser ies .
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  SQA Defined The activitiesand functions designed and implemented by stakeholders to ensure that a high quality software is produced throughout the software development process.
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  Why SQA The keyto software success is its ability to meet an organization’s need and not its ability to work. SQA is there to ensure that factors which contribute to software success are highly managed and controlled to meet the prime purpose of software development.
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  Elements of SQA ●Standards: SQA must ensure that software engineering standards (IEEE, ISO 9000 series, CMMI models etc..) imposed by stakeholders or S.E organizations are met and conformed to. ● Review and audit: Reviews are done by SQA personnel to ensure quality guidelines are followed in software production ● Testing: SQA ensures that this quality control activity is efficiently performed in a way that will enable the software perform its primary function. ● Error Detection, collection and analysis: SQA collects and analyses error data to better understand how some errors come about and how best to eliminate. ● Change management: Ensuring efficient change management practices to boost software quality and minimise impacts of software failure
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  ● Education :SQA organization proposes and sponsors educational programs for Software Engineers, their managers and other stakeholders. ● Vendor management: Out of the three software categories acquired from external vendors, the SQA personnel must suggest quality practices to be adhered to by vendor and also add quality mandates to contract terms. ● Security: SQA ensure that the appropriate technology is used to protect the software data at all levels. ● Safety: Assessment of the effect is performed by SQA personnel and necessary steps are taken to reduce risk. ● Risk management: SQA organization ensures that risk management activities are properly Conducted and emergencies are also well prepared for. Elements of SQA --- Gideon T. Rasmussen
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  Statistical quality assurancedepicts an emerging trend for software organizations to become more quantitative about quality. STEPS: ● Information about software is collected and categorized ● An attempt is made to trace each defect to its underlying cause ● Using the pareto principle (80% of the defects can be traced to 20% of the causes) ● Rectify problems caused by the vital few Statistical SQA
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  Date: 2012 •Study: 5,400large scale IT projects ($15M) •Findings: 17% IT projects go so bad that it threatens the very existence of the company •Average: 45% over budget, 7% over time while delivering 56% less value than predicted Source: McKinsey & Company in conjunction with the University of Oxford Date: Dec 2010 •Survey shows an incredible 70% of organizations have suffered at least one project failure in • the prior 12 months •50% of respondents also indicated that their project failed to consistently achieve what they set out to achieve Source: KPMG (New Zealand) Date: Oct 2008 Type of survey : Survey of 1,500 change management executives Only 40% of projects met schedule, budget and quality goals Best organizations are 10 times more successful than worst organizations Biggest barriers to success listed as people factors: Changing mindsets and attitudes – 58%. Corporate culture – 49%. Lack of senior management support – 32%. Underestimation of complexity listed as a factor in 35% of projects Statistical Software Surveys
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  ● According toIEEE standard, Software reliability is defined as the ability of a system or component to perform its required functions under stated conditions for a specified Period of time. ● Software reliability is therefore a measure of the probability of a software failure occurring. Software Reliability
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  Aggarwal, K., &Singh, Y. (2007). Software Engineering (3rd ed.). New Age international Publishers. References Thank