Software Quality Assurance
- 1. PRESENTATION SOFTWARE QUALITY ASSURANCE, RESEARCH IN SOFTWARE ASSURANCE Given by: Group 6 IMAD UL HASSAN FAHEEM AMEEN AMEER HAMZA ASIF IBRAHIM
- 3. SOFTWARE QUALITY ASSURANCE AND RESEARCH IN QUALITY ASSURANCE
- 4. WHAT IS SOFTWARE QUALITY ? IEEE definition: 1. The degree to which a system, component, or process meets specified requirements. 2. The degree to which a system, component, or process meets customer or user needs or expectations.
- 5. SOME FAMOUS SOFTWARE ERRORS Therac-25 Patriot Missile System NASA's Mars Polar Lander ESA's Arianne 5 Launch System 2003 Blackout
- 6. SOFTWARE QUALITY ASSURANCE IEEE Definition of. "Software Quality Assurance" A planned and systematic pattern of all actions necessary to provide adequate confidence that an item or product conforms to established technical requirements. A set of activities designed to evaluate the process by which the products are developed or manufactured. (Aug 14, 2003) Conformance to software requirements is the foundation from which software quality is measured. Specified standards are used to define the development criteria that are used to guide the manner in which software is engineered.
- 7. ELEMENTS OF SQA Standards Reviews and Audits Testing Errors/ Defect collection and Analysis Changing Management Education Vender Management Risk Management Security Management Safely
- 8. SQA TASKS Prepare an SQA plan Participates in SQL Review Software Engineering activities to verify compliance with the defined Software process Audits designated Software work products to verify compliance with the defined Software process Ensure that deviation in software work and work product are documented and handled according to documented procedure
- 9. GOALS , ATTRIBUTES AND METRIC Requirement Quality Design Quality Code Quality Quality Quality Control Effectiveness
- 11. STATISTICAL SQA Statistical quality assurance reflects a growing trend throughout industry to become more quantitative about quality. For software, statistical quality assurance implies the following steps: Information about software errors and defects is collected and categorized. An attempt is made to trace each error and defect to its underlying cause (e.g., nonconformance to specifications, design error, violation of standards, poor communication with the customer). Using the Pareto principle (80 percent of the defects can be traced to 20 percent of all possible causes), isolate the 20 percent (the vital few). Once the vital few causes have been identified, move to correct the problems that have caused the errors and defects.
- 12. DIFFERENCE BETWEEN SQA AND QC SQA Software quality assurance (SQA) is a process that ensures that developed software meets and complies with defined or standardized quality speci fications. Quality Control “Quality control (QC) is a procedure or set of procedures intended to ensure that a manufactured product or performed service adheres to a defined set of quality criteria or meets the requirements of the client or customer”.
- 13. SUMMARY “Software quality assurance is the mapping of the managerial precepts and design disciplines of quality assurance onto the applicable managerial and technological space of software engineering.” The ability to ensure quality is the measure of a mature engineering discipline. When the mapping is successfully accomplished, mature software engineering is the result.
- 14. WHAT DOES ITS COST ?
- 15. THANKS