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Synchronizable transactional database method and system

  • US 7,363,325 B2
  • Filed: 08/10/2001
  • Issued: 04/22/2008
  • Est. Priority Date: 08/10/2000
  • Status: Expired due to Fees
First Claim
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1. A method of minimizing network traffic during the process of synchronizing a local transaction database with a remote transaction database, comprising:

  • receiving from the remote transaction database a single summary hash computed for database records lying in an interval in the remote transaction database;

    comparing the single summary hash to a local single summary hash computed for database records lying in a same interval in the local transaction database; and

    when the single summary hash does not match the local summary hash, partitioning the interval into at least a first and a second sub-interval and requesting from the remote transaction database a first sub-interval summary hash and a second sub-interval summary hash, the first sub-interval summary hash computed for database records lying in the first sub-interval in the remote transaction database and the second sub-interval summary hash computed for database records lying in the second sub-interval in the remote transaction database,whereby the database can avoid updating database records in a sub-interval at the occurrence of a match between a local sub-interval summary hash and a sub-interval summary hash received from the remote transaction database.

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