DTM Data Comparer is a visual tool for data comparison and synchronization. The program successively views the contents of both tables basing on the order of ascending of Primary Key (or unique key) values. If the program cannot find two records with the same key value, it places the records to different lines and highlights in yellow. If values of the keys coincide, the program places them to the same lines and highlights equal fields in green and unequal fields in red. When you use mapping, the program leaves columns that don't take part in comparison white.