||QA is a set of activities for ensuring quality in the processes by which products are developed.
||QC is a set of activities for ensuring quality in products. The activities focus on identifying defects in the actual products produced.
||QA aims to prevent defects with a focus on the process used to make the product. It is a proactive quality process.
||QC aims to identify (and correct) defects in the finished product. Quality control, therefore, is a reactive process.
||The goal of QA is to improve development and test processes so that defects do not arise when the product is being developed.
||The goal of QC is to identify defects after a product is developed and before it’s released.
||Establish a good quality management system and the assessment of its adequacy. Periodic conformance audits of the operations of the system.
||Finding & eliminating sources of quality problems through tools & equipment so that customer’s requirements are continually met.
||Prevention of quality problems through planned and systematic activities including documentation.
||The activities or techniques used to achieve and maintain the product quality, process and service.
||Everyone on the team involved in developing the product is responsible for quality assurance.
||Quality control is usually the responsibility of a specific team that tests the product for defects.
||Verification is an example of QA
||Validation/Software Testing is an example of QC
||Statistical Tools & Techniques can be applied in both QA & QC. When they are applied to processes (process inputs & operational parameters), they are called Statistical Process Control (SPC); & it becomes the part of QA.
||When statistical tools & techniques are applied to finished products (process outputs), they are called as Statistical Quality Control (SQC) & comes under QC.
|As a tool
||QA is a managerial tool
||QC is a corrective tool
||QA is process oriented
||QC is product oriented