Verification and Validation are independent procedures that are used together for checking that a product, service or system meets requirements and specifications and validation is performed by a third party.
Verification:
Verification:
- It represents whether we are building the product right.
- The review of interim wok steps and interim deliverable during a project to ensure they are acceptable.
- To determine if the system is consistent, adheres to standards, uses reliable techniques and prudent practices and performs the selection functions in the correct manner.
- It represents whether we are accessing the data right in the right place, in the right way.
- Verification is a low level activity.
- This process is performed during development on key artifacts, like walk through, reviews and inspections, mentoring feedback, checklists, training and standards.
- It demonstrates the consistency, completeness and correctness of the system at each stage and between each stage of development life cycle of the system.
Validation:
- It represents where we are developing the right product.
- Used in determining if the software complies with the requirements and performs functions for which it is intended to meets the organization's goals and user requirements.
- Validation is traditional and performed at the end of the project.
- It represents whether we are acceding the right data in terms of the data required to satisfy the requirement.
- Validation is a high level activity.
- Validation is performed after a software is produced against the well established criteria ensuring that the product integrates correctly into the environment.
- Mainly performed to determine the correctness of the final software product by a development project with respect to the requirements.
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