As software development proceeds, the structure turns out to be more complicated. It is very evident that any fault is difficult to find when the system becomes greater. So, the defect prevention strategies in software testing turn out to be imperative.
The job of testers with the correct dimension of experience is exceptionally critical now; they should be involved in defect prevention activities to guarantee the smooth working of different tasks. It is extremely dangerous to trust that defects will occur at a later stage.
In Medical Science there is a principle, “Prevention is better than Cure”; the equivalent applies to the Software Development Life Cycle. Consequently, it is extremely important to control Defect Detection by removing them before they show up in the system. Such defect prevention techniques assist testers with building a high-quality product and furthermore reduce the project cost.
Defect prevention strategies in software testing are a standout amongst the most vital software quality assurance activities of an SDLC, which directly affects controlling the cost of the project and the quality of deliverables.
The cost of rectifying the defect in the product is high when contrasted with anticipating. Henceforth it is constantly advisable to take measures, which will keep the defect being presented in the product, as early as possible.
The amount of rework is a noteworthy cost factor in software maintenance and development. The number of defects and problems related to the product are an immediate contribution to this cost. Estimation of issues and defects can assist us with understanding where and how the defects and issues happen and give knowledge to strategies for detection, prevention, and prediction and monitor costs.
In brief, following are the defect prevention roles for testers in each of the below stages:
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Requirement Specification Review:
After understanding the client’s prerequisites set up your necessity’s essence.
A review is critical at this step-the First dimension of review should be inside the team, followed by another dimension of external review to ensure that all the viewpoints are in sync.
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Design Review:
Design stage can be viewed as a system phase of sorts and experiencing it will guarantee that the QA team understands the upsides and downsides of every procedure.
This sort of basic walkthrough will help uncover any issues with the said systems and fix them before going further. This can be viewed as a feasibility study for the system.
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Code Review:
There isn’t a lot for testers to directly get engaged with this stage, yet the review goes on here as well. Developers do code assessments, walkthroughs, and reviews before they unit and integration test the application.
Software Defect Prevention Methods and Techniques:
Some traditional and common defect prevention strategies in software testing that have been in use since a long time for defect prevention are listed below:
- Review and Inspection: This technique incorporates the survey by an individual colleague, peer reviews and assessment of all work products.
- Walkthrough: This is pretty much like a review yet it’s mostly identified with contrasting the system to the prototype which will give a superior thought in regards to the accuracy as well as the look-and-feel of the system.
- Defect Logging and Documentation: This strategy gives some key data, arguments/parameters that can be utilized to help in analyzing
- Root Cause Analysis: Root cause analysis incorporates two noteworthy methodologies:
- Pareto Analysis:
The Pareto analysis is a formal and easy method which organizes the request of issue goals for maximum impact. It expresses that 80% of the issue emerges because of 20% reasons.
- Fishbone Analysis:
It is also called Ishikawa Analysis this strategy is a more visual root cause analysis method. There are no insights required as this technique depends on team-wide brainstorming.
Some of the advantages of defect prevention in software testing:
- Quicker Delivery – Accelerate the release cycles – Ensure smooth conveyances. Software Development free of Hassles
- Increase Customer satisfaction
- Reduction of costs
- Reduction of Rework
Defect prevention techniques in software testing are a valuable investment which keeps up the quality of the product with quicker timetables. Defect prevention analysis gets enhanced quality product as well as recoveries the time and cost of the product, reduce the development time, decrease the rework effort, and increment the consumer loyalty. Because of it upgrades the total productivity.
Implementation of defect prevention model not just reflects a high level of process development but at the same time is a most important investment. The identification of bugs in development life cycle keeps the passage of errors from design to code and requirement specification to design. There are a few strategies, procedures, and practices for defect management. Software testing and quality assurance have ended up being the best defect prevention and detection method. The objective of achieving reliable 99% bug-free software depends much on the adoption of successful defect prevention strategies in software testing.
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