Quality control (QC) is a process by which entities review the quality of all factors involved in production. ISO 9000 defines quality control as "a part of quality management focused on fulfilling quality requirements".This approach places emphasis on three aspects (enshrined in standards such as ISO 9001):Elements such as controls, job management, defined and well managed processes, performance and integrity criteria, and identification of recordsCompetence, such as knowledge, skills, experience, and qualificationsSoft elements, such as personnel, integrity, confidence, organizational culture, motivation, team spirit, and quality relationships.