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QA is the planning and management for the Quality in all organization with applicable requirements while QC is operating implementation the applicable requirements.
QC stands for Quality control and QA stands for Quality Assurance
QA IS RESPONSIBLE FOR MONITORING THE PROCESS AND FOCUSES ON DEFECT PREVENTION BUT THE QC IS RESPONSIBLE FOR MONITORING THE PRODUCT AND FOCUSES ON DEFECT IDENTIFICATION
Quality Assurance is process oriented and focuses on defect prevention, while Quality Control is product oriented and focuses on defect identification. QA is a set of activities for ensuring quality in the processes by which products are developed.QA aims to prevent defects with a focus on the process used to make the product. It is a proactive quality process.The goal of QA is to improve development and test processes so that defects do not arise when the product is being developed.Establish a good quality management system and the assessment of its adequacy. Periodic conformance audits of the operations of the system.Prevention of quality problems through planned and systematic activities including documentation.Everyone on the team involved in developing the product is responsible for quality assurance.QA is a managerial tool, and is process oriented.
QC is a set of activities for ensuring quality in products. The activities focus on identifying defects in the actual products produced.QC aims to identify (and correct) defects in the finished product. Quality control, therefore, is a reactive process.The goal of QC is to identify defects after a product is developed and before it's released.Finding & eliminating sources of quality problems through tools & equipment so that customer's requirements are continually met.The activities or techniques used to achieve and maintain the product quality, process and service.Quality control is usually the responsibility of a specific team that tests the product for defects.Validation/Software Testing is an example of QC.
QUALITY ASSURANCE THEN ITS CONTROL
QA is process oriented [ before executing the job] and qc is product oriented[ implementing through out the job until job get finished]. in Other words QC is the implemetation of QA.
Quality assurance consists of that “part of quality management focused on providing confidence that quality requirements will be fulfilled.” The confidence provided by quality assurance is twofold—internally to management and externally to customers, government agencies, regulators, certifiers, and third parties.
Quality control is that “part of quality management focused on fulfilling quality requirements.”
While quality assurance relates to how a process is performed or how a product is made, quality control is more the inspection aspect of quality management.
quality assurance is a part of the managing process for quality control.