Information is of high quality if it meets users needs. Accurate, complete and timely information is required for optimal business performance in modern enterprises. This article defines information quality and its characteristics. The author presents also conceptions of information quality management. These are:* Total Information Quality Management Methodology of L. English,* Algorithm of information quality improvement of B. Godfrey,* Data Quality Program of D. Loshin,* Data Quality Program of PricewaterhoseCoopers,* Data Quality Program of J. Geiger.