Understanding the Difference Between Data Quality and Integrity

Data quality and data integrity are related but distinct concepts in information management. Data quality covers dimensions like accuracy, completeness, consistency, and timeliness — how suitable data is for its intended use. Data integrity focuses on keeping data trustworthy, unaltered, and consistent throughout its entire lifecycle across storage, processing, and transmission. A dataset can score high on quality metrics yet still lack integrity if it is vulnerable to unauthorized changes. Organizations that conflate the two risk flawed analytics, compliance violations (GDPR, HIPAA), and financial losses estimated at $12.9 million annually per Gartner. Real-world breaches, such as the University of Hawaii Cancer Center ransomware attack affecting 1.2 million records, illustrate the cost of neglecting integrity. Effective data governance must address both dimensions simultaneously.