Quality Assurance

SOFTWARE QUALITY ASSURANCE (SQA) 

It is a set of activities for ensuring quality in software engineering processes that ultimately results, or at least gives confidence, in the quality of software products. Quality assurance steps should be taken in each phase to ensure that there are no errors in final product.

        

       The system life cycle considered various stages of development and each stage has a major goal that is the quality assurance. Quality assurance specialists go through system testing before they grant certification.

         

              There are following quality factors which assure the quality of the system.

1. Correctness:- The extent to which a program meets system specifications and user objectives.
2. Reliability:-  the degree to which the system perform its intended function over a time.
3. Error Tolerance:- The capacity of error avoidance, error detection and correction.
4. Usability:- The effort required to learn and operate a system.
5. Test ability:- The effort required to test a program to ensure its correct performance.
6. Portability:- The easy way to take a program from one hardware device to another.
7. Accuracy:- The amount of correctness in input, computation and output.
8. Expand ability:- The how much easy to add and expand the existing database.

Quality Assurance Goals

• Requirement specification
• Design specification
• Testing and Implementation
• Maintenance and support

Level of Quality Assurance

Quality has been defined as a characteristic or an attribute of an entity.Perfect quality is costly and virtually impossible to achieve.There are three level of quality assurance these are:-

• Testing:- The common view of testing is to eliminate program errors. A successful testing is that in which we find all errors.
• Validation:- System validation checks the quality in both simulated and live environment.
• Certification:- The third level of the quality assurance that program software package is correct and confirms to standards. Certificate is given when system passes the testing.