Patents by Inventor Yung-Li L. Jow

Yung-Li L. Jow 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 executing queries
    Patent number: 9424310
    Abstract: There is provided a computer-implemented method of executing a query plan against a database. An exemplary method comprises accessing a first subset of rows of a database table using a direct access method for an index. The query plan may comprise the direct access method. The exemplary method also comprises determining a processing cost of accessing the first subset of rows. The exemplary method further comprises modifying the direct access method for the index in response to determining that the processing cost exceeds a specified threshold. Additionally, the exemplary method comprises accessing a second subset of rows of the database table using the modified direct access method.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: August 23, 2016
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: David W. Birdsall, Yung-Li L. Jow, Goetz Graefe
  • SYSTEM AND METHOD FOR EXECUTING QUERIES
    Publication number: 20140201189
    Abstract: There is provided a computer-implemented method of executing a query plan against a database. An exemplary method comprises accessing a first subset of rows of a database table using a direct access method for an index. The query plan may comprise the direct access method. The exemplary method also comprises determining a processing cost of accessing the first subset of rows. The exemplary method further comprises modifying the direct access method for the index in response to determining that the processing cost exceeds a specified threshold. Additionally, the exemplary method comprises accessing a second subset of rows of the database table using the modified direct access method.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 17, 2014
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: David W. Birdsall, Yung-Li L. Jow, Goetz Graefe
  • System and method for executing queries
    Patent number: 8775414
    Abstract: There is provided a computer-implemented method of executing a query plan against a database. An exemplary method comprises accessing a first subset of rows of a database table using a direct access method for an index. The query plan may comprise the direct access method. The exemplary method also comprises determining a processing cost of accessing the first subset of rows. The exemplary method further comprises modifying the direct access method for the index in response to determining that the processing cost exceeds a specified threshold. Additionally, the exemplary method comprises accessing a second subset of rows of the database table using the modified direct access method.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: July 8, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David W. Birdsall, Yung-Li L. Jow, Goetz Graefe
  • SYSTEM AND METHOD FOR EXECUTING QUERIES
    Publication number: 20120197869
    Abstract: There is provided a computer-implemented method of executing a query plan against a database. An exemplary method comprises accessing a first subset of rows of a database table using a direct access method for an index. The query plan may comprise the direct access method. The exemplary method also comprises determining a processing cost of accessing the first subset of rows. The exemplary method further comprises modifying the direct access method for the index in response to determining that the processing cost exceeds a specified threshold. Additionally, the exemplary method comprises accessing a second subset of rows of the database table using the modified direct access method.
    Type: Application
    Filed: April 16, 2012
    Publication date: August 2, 2012
    Inventors: David W. Birdsall, Yung-Li L. Jow, Goetz Graefe
  • System and method for executing queries
    Patent number: 8200660
    Abstract: There is provided a computer-implemented method of executing a query plan against a database. An exemplary method comprises accessing a first subset of rows of a database table using a direct access method. The query plan may comprise the direct access method. The exemplary method also comprises determining a processing cost of accessing the first subset of rows. The exemplary method further comprises modifying the direct access method in response to determining that the processing cost exceeds a specified threshold. Additionally, the exemplary method comprises accessing a second subset of rows of the database table using the modified direct access method.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: June 12, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David W. Birdsall, Yung-Li L. Jow, Goetz Graefe
  • SYSTEM AND METHOD FOR EXECUTING QUERIES
    Publication number: 20110099160
    Abstract: There is provided a computer-implemented method of executing a query plan against a database. An exemplary method comprises accessing a first subset of rows of a database table using a direct access method. The query plan may comprise the direct access method. The exemplary method also comprises determining a processing cost of accessing the first subset of rows. The exemplary method further comprises modifying the direct access method in response to determining that the processing cost exceeds a specified threshold. Additionally, the exemplary method comprises accessing a second subset of rows of the database table using the modified direct access method.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 28, 2011
    Inventors: David W. Birdsall, Yung-Li L. Jow, Goetz Graefe