Patents Represented by Attorney Griffith Hack

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  • Refreshing an execution plan for a query
    Patent number: 7548905
    Abstract: An improved system and method for storing, reusing and recompiling execution plans for SQL database queries. The system. The system validates the performance of a newly compiled plan prior to replacing a currently stored execution plan and compares the resource cost of the recompiled plan with the cost of the currently stored plan. In the event that the resource cost of the recompiled plan is not greater than the stored plan resource cost, the system replaces the currently stored execution plan with the recompiled plan.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: June 16, 2009
    Assignee: Teradata US, Inc.
    Inventors: Louis Burger, Thomas Julien
  • System and method for improving database reorganization time
    Patent number: 7430557
    Abstract: The invention provides a system and method for the reorganization of a database in a computing system. The method includes determining operations necessary to effect the reorganization of the database, estimating the completion time for the operations, and scheduling operations to be executed in the order of decreasing estimated completion time.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: September 30, 2008
    Assignee: Unisys Corporation
    Inventors: Charles Zdzislaw Loboz, Jonatan Kelu