Patents by Inventor Arunachalam Balachandran

Arunachalam Balachandran 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).

  • System and method for continuously adaptive indexes
    Patent number: 6360213
    Abstract: Hybrid target indexes are employed for skewed data set domains. Such hybrid indexes contain multiple value representations within a given index. The representations can be optimized for particular keys in highly skewed data set domains. For example, a hybrid target index on customer states might employ a bitmap to represent the index value for a California key and also employ, in the same index, an uncompressed list of row-IDs to represent the index value for a Delaware key.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: March 19, 2002
    Assignee: International Business Machines Corporation
    Inventors: William M. Wagstaff, Donovan A. Schneider, Galt Johnson, Jeffrey A. Byard, David L. Morandi, Phillip M. Fernandez, Arunachalam Balachandran