Patent ID: 7373669

Claim:
A method of detecting fraudulent or erroneous data from a transaction data set, comprising the steps of: a) selecting a transaction record from a first database comprising a plurality of transaction records for detecting fraudulent or erroneous data, each of the plurality of transaction records having a plurality of key values; b) selecting a first key value from the transaction record selected in step a); c) querying the first database for transaction records having the same or related first key value selected in step b); d) compiling a second database of transaction records taken from the first database that contain the selected first key value; e) selecting at least one other key value from the transaction record selected in step a); f) compiling a list of queried key values into a key value query database; g) querying the first database for transaction records having the other key value selected in step e); and h) adding the results of step g) to the second database.