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Quality assurance aims to identify and correct errors early in the development process through reviews and testing at each phase. The System Software Lifecycle (SSLC) model aims to ensure quality when developing software. It has five stages: requirements specification, design specification, testing and implementation, and maintenance and support. Testing is an important but difficult part of development that helps eliminate errors by determining what causes failures. Validation and certification ensure the software meets standards through simulated and live testing. Maintenance provides adjustments to comply with specifications and improve quality through problem reporting and resolution.
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Lesson 7...Question Part 1
Software quality refers to how well a software product or service meets requirements and expectations. It is subjective as it depends on the perspective of the customer. Common aspects of quality include the software being bug-free, delivered on time and on budget, meeting requirements, and being maintainable. True software quality can only be determined by measuring how well the software serves its intended purpose from the viewpoint of all stakeholders.
Software validation
The document outlines the software validation process which includes test development to check if software meets customer specifications. It describes the human and material resources needed for testing as well as constraints like limited resources and budget. The validation process involves documentation, test setup, development and execution, reporting, result analysis, defect retesting, regression testing, and closure to archive results for future projects.
7 steps to Software test automation success
Ten steps to test automation success are outlined. The key steps are to improve testing processes, define requirements, prove automation concepts, design products for testability, create sustainable test designs, plan deployments, and address challenges. Test automation can significantly reduce testing effort and increase coverage, but requires careful test selection, design, and addressing common problems like lack of goals, experience, and understanding of new technologies.
Software Testing - Software Quality
The document discusses software quality assurance and testing. It defines software quality as having two aspects - quality of design which includes requirements and specifications, and quality of conformance which focuses on implementation. Software Quality Assurance (SQA) includes quality management, effective engineering processes, formal techniques, testing strategies, documentation control, and measurement/reporting. SQA aims to ensure requirements quality, design quality, code quality, and effective quality control. Non-functional attributes like reliability, usability, and performance largely determine a software's subjective quality from a user's perspective.
Validation testing
Validation testing involves black box testing to check if the software meets customer expectations by satisfying requirements, achieving behavioral characteristics, attaining performance standards, and ensuring documentation is correct. Configuration review checks if all software elements were properly developed. Alpha testing is done by customers at developer sites in a controlled environment, while beta testing involves end users testing software in uncontrolled environments at customer sites.
Software Quality Assurance - Software Engineering PPT by Devansh Koolwal
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Testing strategies,techniques & test case SE
This document discusses software testing strategies, techniques, and test cases. It describes four main testing strategies: unit testing, integration testing, validation testing, and system testing. Unit testing tests individual components, integration testing tests interactions between modules and externally, validation testing ensures requirements are met, and system testing verifies overall system performance. Black box and white box testing techniques are also outlined, where black box focuses on external behavior and white box examines internal logical structures. The importance of selecting test cases that exercise faulty program segments is also highlighted.
Software testing strategies And its types
Software Testing is a type of investigation to find out if there is any default or error present in the software so that the errors can be reduced or removed to increase the quality of the software and to check whether it fulfills the specifies requirements or not.
According to Glen Myers, software testing has the following objectives:
The process of investigating and checking a program to find whether there is an error or not and does it fulfill the requirements or not is called testing.
When the number of errors found during the testing is high, it indicates that the testing was good and is a sign of good test case.Finding an unknown error that’s wasn’t discovered yet is a sign of a successful and a good test case
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Software quality refers to how well a software product or service meets requirements and expectations. It is subjective as it depends on the perspective of the customer. Common aspects of quality include the software being bug-free, delivered on time and on budget, meeting requirements, and being maintainable. True software quality can only be determined by measuring how well the software serves its intended purpose from the viewpoint of all stakeholders.
Software validation
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Ten steps to test automation success are outlined. The key steps are to improve testing processes, define requirements, prove automation concepts, design products for testability, create sustainable test designs, plan deployments, and address challenges. Test automation can significantly reduce testing effort and increase coverage, but requires careful test selection, design, and addressing common problems like lack of goals, experience, and understanding of new technologies.
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Validation testing involves black box testing to check if the software meets customer expectations by satisfying requirements, achieving behavioral characteristics, attaining performance standards, and ensuring documentation is correct. Configuration review checks if all software elements were properly developed. Alpha testing is done by customers at developer sites in a controlled environment, while beta testing involves end users testing software in uncontrolled environments at customer sites.
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Software Testing is a type of investigation to find out if there is any default or error present in the software so that the errors can be reduced or removed to increase the quality of the software and to check whether it fulfills the specifies requirements or not.
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Verification
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Whitebox testing
White box testing involves designing test cases based on examining the internal structure and logic of a program. This includes:
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This document provides an overview of software testing, including definitions, types of testing, and the software testing lifecycle. It defines software testing as a method to assess software functionality. The key points covered are:
- Software testing ensures software does what it's intended to do and remains functional after changes.
- Types of testing include unit, integration, system, and regression testing.
- The software testing lifecycle includes planning, developing test cases, executing tests, and closing test cycles.
- Cloud testing can reduce regression testing time by using virtualized hardware and software services.
SENG202-v-and-v-modeling_121810.pptx
The document discusses software testing and analysis. It describes the goals of verification and validation as establishing confidence that software is fit for purpose without being completely defect-free. Both verification and validation are whole-life cycle processes involving static and dynamic techniques to discover defects and assess usability. The document outlines different testing and inspection methods like unit testing, integration testing, walkthroughs, and inspections and their roles in the verification and validation process.
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Sslc
- 2. Quality Assurance Quality assurance deals with the objective of the project and reviews the overall activities so that errors are corrected early in the development process. Steps are taken in each phase to ensure that no errors are found ultimately in the final software
- 4. System Software Lifecycle – The aim to ensure quality when developing software's.
- 5. Quality factors • Correctness – extent to which Program meets the aim • Reliability - the degree to which the system performs its intended functions over a time. • Efficiency - Amount of Computer resources required • Usability - efforts needed to learn and operate • Maintainability - Errors located& Corrected • Testability - to test a program
- 6. Quality factors • Portability - transporting a program from hardware to the other….. • Accuracy - the required Precision in input editing, computations and output. • Error Tolerance - Error detection versus error avoidance • Expandability - Ease of adding databases • Access control and audit - Extent to which access can be audited. • Communicativeness - How descriptive or useful the inputs and outputs are explained.
- 7. SSLC – LIFECYCLE STAGES Software Requirements specification Sotware Testing Software Design Specification Software Implementation Software Maintenance and Support
- 8. STAGE 1 : SOFTWARE REQUIREMENTS SPECIFICATION • The goal of this stage is to generate the required document which provides the technical specifications for the design and development of the software. • Accurate Document enhances the system quality – By formalizing the communication between the system developer and user
- 9. STAGE 2 : SOFTWARE DESIGN SPECIFICATION • This stage defines the overall architecture of the software. • It provides the functions and features described in the software requirements document. • It defines the logical subsystem and their respective physical modules.
- 10. STAGE 3 & 4 : SOFTWARE TESTING & IMPLEMENTATION • Testing is to ensure the completeness and accuracy of the system and minimize the resetting process. • Implementation stage is to provide a logical order of creation of modules.
- 11. 1. Testing • Helps to eliminate program errors. • Extremely difficult and Time Consuming • Introduce Fail Test Cycle – determines what will make it fail A successful Testing is one that finds errors.
- 12. 2. Validation • Checks the quality of software in both simulated as well as live environment. • Alpha Testing and Beta Testing will be handled in this stage. After the scheduled time failures and errors are documented and corrections & enhancements are made before the package is released for use.
- 13. 3. Certification • To certify that the program or software is current and confirms to standards. • Testing specialist will review and determine how well it meets the vendor’s claim. • Certification is issued after the testing procedure is done.
- 14. STAGE 5 : SOFTWARE MAINTENANCE AND SUPPORT • To provide necessary software adjustment for the system to comply with the original specifications. • To develop a procedure for correcting errors • To Improve quality assurances by encouraging completing recording and lodging of problems. • To ensure that reported problems are promptly forwarded to the appropriate resolver.