Patents by Inventor Quanhua Hong

Quanhua Hong 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).

  • Patent number: 8161015
    Abstract: Rectifying discrepancies between a table, from which a segment of data has been removed, and an index for the table may be deferred. Each entry in the index is sequentially analyzed to remove entries therefrom referring to any removed segment referenced in the starting location list. During this process, if a segment newly removed from the table is detected, then analysis of the index entries continues and an indicator is set that another segment has been removed. Analysis of the entries continues in a looping fashion until each entry has been assessed to determine if it makes a reference to any of the removed segments. If a query is received before rectification is complete then the query is amended by establishing search boundaries based so that the query does not produce any entries in the index referring to removed segments.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: April 17, 2012
    Assignee: International Business Machines Corporation
    Inventors: John Paul Kennedy, Quanhua Hong, William T. O'Connell, Leslie Anne Buback
  • Publication number: 20110184923
    Abstract: Rectifying discrepancies between a table, from which a segment of data has been removed, and an index for the table may be deferred. Each entry in the index is sequentially analyzed to remove entries therefrom referring to any removed segment referenced in the starting location list. During this process, if a segment newly removed from the table is detected, then analysis of the index entries continues and an indicator is set that another segment has been removed. Analysis of the entries continues in a looping fashion until each entry has been assessed to determine if it makes a reference to any of the removed segments. If a query is received before rectification is complete then the query is amended by establishing search boundaries based so that the query does not produce any entries in the index referring to removed segments.
    Type: Application
    Filed: April 11, 2011
    Publication date: July 28, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: John Paul KENNEDY, Quanhua HONG, William T. O'CONNELL, Leslie Anne BUBACK
  • Patent number: 7945543
    Abstract: Rectifying discrepancies between a table, from which a segment of data has been removed, and an index for the table may be deferred. Each entry in the index is sequentially analyzed to remove entries therefrom referring to any removed segment referenced in the starting location list. During this process, if a segment newly removed from the table is detected, then analysis of the index entries continues and an indicator is set that another segment has been removed. Analysis of the entries continues in a looping fashion until each entry has been assessed to determine if it makes a reference to any of the removed segments. If a query is received before rectification is complete then the query is amended by establishing search boundaries based so that the query does not produce any entries in the index referring to removed segments.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: May 17, 2011
    Assignee: International Business Machines Corporation
    Inventors: John Paul Kennedy, Quanhua Hong, William T. O'Connell, Leslie Anne Buback
  • Publication number: 20070239342
    Abstract: Rectifying discrepancies between a table, from which a segment of data has been removed, and an index for the table may be deferred. Each entry in the index is sequentially analyzed to remove entries therefrom referring to any removed segment referenced in the starting location list. During this process, if a segment newly removed from the table is detected, then analysis of the index entries continues and an indicator is set that another segment has been removed. Analysis of the entries continues in a looping fashion until each entry has been assessed to determine if it makes a reference to any of the removed segments. If a query is received before rectification is complete then the query is amended by establishing search boundaries based so that the query does not produce any entries in the index referring to removed segments.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 11, 2007
    Applicant: International Business Machines Corporation
    Inventors: John Kennedy, Quanhua Hong, William O'Connell, Leslie Buback
  • Patent number: 7203802
    Abstract: A memory buffer facilitates log catchup for online operations. Certain designated areas of memory are allocated for one or more buffers for use during online operations (e.g., reorganization, create index, etc.). Concurrent update activities to the target object write informational records into the one or more buffers. If the buffers become full, the informational records may be written to logs for persistent storage. After online operations finish building all or a suitable portion of the shadow object, log catchup is performed by first applying activities in the informational records from the buffer and thereafter applying activities from logs, if necessary. The invention helps solve the drawbacks of log catchup since the buffer contains only the information related to the target shadow object. Also it does not involve physical I/Os, as these records are all in memory.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: April 10, 2007
    Assignee: International Business Machines Corporation
    Inventors: Matthew A. Huras, Quanhua Hong, Catherine S. McArthur, Lorysa M. Meadowcroft, Shaun K. Thornborough, Michael J. Winer, Roger L. Q. Zheng
  • Publication number: 20040221030
    Abstract: A memory buffer facilitates log catchup for online operations. Certain designated areas of memory are allocated for one or more buffers for use during online operations (e.g., reorganization, create index, etc.). Concurrent update activities to the target object write informational records into the one or more buffers. If the buffers become full, the informational records may be written to logs for persistent storage. After online operations finish building all or a suitable portion of the shadow object, log catchup is performed by first applying activities in the informational records from the buffer and thereafter applying activities from logs, if necessary. The invention helps solve the drawbacks of log catchup since the buffer contains only the information related to the target shadow object. Also it does not involve physical I/Os, as these records are all in memory.
    Type: Application
    Filed: April 29, 2003
    Publication date: November 4, 2004
    Applicant: International Business Machines Corporation
    Inventors: Matthew A. Huras, Quanhua Hong, Catherine S. McArthur, Lorysa M. Meadowcroft, Shaun K. Thornborough, Michael J. Winer, Roger L.Q. Zheng