Patents by Inventor Diane L. Davison

Diane L. Davison has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Processing records from a database
    Patent number: 5978793
    Abstract: A computer-based method and system of processing records read respectively from first and second related tables of a database includes determining whether data contained in the records read from the first or second tables is unevenly distributed. Records corresponding to evenly distributed data are searched for matches using a first set of instances of the hash-join operator, and records corresponding to data which is unevenly distributed are searched for matches using a second set of instances of a hash-join operator.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: November 2, 1999
    Assignee: Informix Software, Inc.
    Inventors: Anurag Kashyap, Robert H. Gerber, Diane L. Davison, Sanket Atal, Hannes A. Spintzik, Mark T. Nelson
  • Applying distinct hash-join distributions of operators to both even and uneven database records
    Patent number: 5873074
    Abstract: A computer-based method and system of processing records read respectively from first and second related tables of a database includes determining whether data contained in the records read from the first or second tables is unevenly distributed. Records corresponding to evenly distributed data are searched for matches using a first set of instances of the hash-join operator, and records corresponding to data which is unevenly distributed are searched for matches using a second set of instances of a hash-join operator.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: February 16, 1999
    Assignee: Informix Software, Inc.
    Inventors: Anurag Kashyap, Robert H. Gerber, Diane L. Davison, Sanket Atal, Hannes A. Spintzik, Mark T. Nelson