The present invention is directed to a system and method for processing data in which inputs of a plurality of records including respective entries in a first field and in a second field are received. At least some of the records are processed so as to find a relation between the entries in the first and second fields in the at least some of the records. One of the records comprising first and second entries in the first and second fields respectively is selected. Thereafter, the first and second entries are compared to the relation in order to verify the first and second entries.