Patents by Inventor Wan Chuan Zhang

Wan Chuan Zhang 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).

  • Database query in a share-nothing database architecture
    Patent number: 9146959
    Abstract: Data query in a share-nothing database includes obtaining a query request and generating an optimized access plan with respect to the query request. The query request relates to external data stored in an external data source and contains a definition for expected distribution of the external data. The data query also includes obtaining data distribution information related to the expected distribution based on the optimized access plan, transmitting the data distribution information to the external data source so that the external data source splits and returns the external data in accordance with the data distribution information, and executing query-related processing of the split external data in accordance with the optimized access plan.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: September 29, 2015
    Assignee: International Business Machines Corporation
    Inventors: Xing Chen, Qing Yun Hao, Yi Jin, Wan Chuan Zhang
  • Input/output efficiency for online analysis processing in a relational database
    Patent number: 8719312
    Abstract: Embodiments of the invention relate to improved input/output efficiency for online analysis processing in a relational database. An aspect of the invention includes selecting a table from a relational database. The table is split by column into sub-tables, with at least one of the sub-tables including at least two columns. Each sub-table is written into a corresponding table of a row-based storage database.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: May 6, 2014
    Assignee: International Business Machines Corporation
    Inventors: Yi Jin, Lei Li, Li Li Wang, Wan Chuan Zhang
  • DATABASE QUERY IN A SHARE-NOTHING DATABASE ARCHITECTURE
    Publication number: 20140095470
    Abstract: Data query in a share-nothing database includes obtaining a query request and generating an optimized access plan with respect to the query request. The query request relates to external data stored in an external data source and contains a definition for expected distribution of the external data. The data query also includes obtaining data distribution information related to the expected distribution based on the optimized access plan, transmitting the data distribution information to the external data source so that the external data source splits and returns the external data in accordance with the data distribution information, and executing query-related processing of the split external data in accordance with the optimized access plan.
    Type: Application
    Filed: August 13, 2013
    Publication date: April 3, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xing Chen, Qing Yun Hao, Yi Jin, Wan Chuan Zhang
  • INPUT/OUTPUT EFFICIENCY FOR ONLINE ANALYSIS PROCESSING IN A RELATIONAL DATABASE
    Publication number: 20120254252
    Abstract: Embodiments of the invention relate to improved input/output efficiency for online analysis processing in a relational database. An aspect of the invention includes selecting a table from a relational database. The table is split by column into sub-tables, with at least one of the sub-tables including at least two columns. Each sub-table is written into a corresponding table of a row-based storage database.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 4, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yi Jin, Lei Li, Li Li Wang, Wan Chuan Zhang