Patents by Inventor Ramakrishna Korlapati

Ramakrishna Korlapati 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).

  • Deriving session level statistics for temporary tables
    Patent number: 7860833
    Abstract: Statistics for temporary tables are used in optimizing the execution of a database request. A first temporary table is created using data from a data source as the result of performing an operation while executing the request. A subset of the demographics of the data source is saved in a session level memory as the demographics of the first temporary table. The saved demographics are used in optimizing the execution of the portion of the request involving the first temporary table.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: December 28, 2010
    Assignee: Teradata US, Inc.
    Inventor: Ramakrishna Korlapati
  • Using a correlation factor to derive join costing statistics
    Patent number: 7747609
    Abstract: Deriving join cost demographics for a binary join, i.e., a join between two relations each having a join column, includes using a correlation factor related to the ratio of unique join column values stored in each of a plurality of units of storage to the total number of unique values in the join column.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: June 29, 2010
    Assignee: Teradata US, Inc.
    Inventors: Grace K. Au, Bibhu Ranjan Priyadarshi, Ramakrishna Korlapati, Sanjay Sukumaran Nair