Difference Between VERFICATION AND VALLIDATION

ValidationVerificationAm I building the right productAm I building the product rightDetermining if the system complies with the requirements and performs functions for which it is intended and meets the organization’s goals and user needs. It is traditional and is performed at the end of the project.The review of interim work steps and interim deliverables 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 selected functions in the correct manner.Am I accessing the right data (in terms of the data required to satisfy the requirement)Am I accessing the data right (in the right place; in the right way).High level activityLow level activityPerformed after a work product is produced against established criteria ensuring that the product integrates correctly into the environmentPerformed during development on key artifacts, like walkthroughs, reviews and inspections, mentor feedback, training, checklists and standardsDetermination of correctness of the final software product by a development project with respect to the user needs and requirementsDemonstration of consistency, completeness, and correctness of the software at each stage and between each stage of the development life cycle.