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Matching new customer records to existing customer records in a large business database using hash key

  • US 5,819,291 A
  • Filed: 08/23/1996
  • Issued: 10/06/1998
  • Est. Priority Date: 08/23/1996
  • Status: Expired due to Fees
First Claim
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1. The method for matching a new data set containing a record and a collection of fields to a database containing a plurality of records each having a collection of fields, the method comprising the steps of:

  • reading the new data set;

    validating each of the fields from the record in the new data set;

    normalizing the validated fields in the record in the new data set into a standard form;

    selecting a hash key for generating a candidate set of records from the database that likely matches the record from the new data set;

    applying the hash key to the plurality of records in the database to generate the candidate set of records;

    matching the record from the new data set to each of the records in the candidate set; and

    updating the plurality of records in the database according to the match of the record from the new data set to the records in the candidate set.

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