Patents by Inventor Xiang W. Zhou

Xiang W. Zhou 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: 10902015
    Abstract: Several replication subscriptions are defined for a table in a database management system. The table is divided into partitions. Each replication subscription replicates transactions to a range of partitions. Subscriptions are assignable to different consistency groups. Transaction consistency is preserved at the consistency group level. A persistent delay table is created for each of several apply functions. Each apply function processes replication subscriptions for one consistency group, to replicate the table to a target table in parallel. Transactions for a given range of a partition are executed in parallel. When an apply function upon a row of the target table results in an error, the row is stored in the delay table. Application of each row in the delay table is repeatedly retried, and if successful, the row is removed from the delay table.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: January 26, 2021
    Assignee: International Business Machines Corporation
    Inventors: Serge Bourbonnais, Austin F. M. D'Costa, Xiao Li, Jonathan W. Wierenga, Xin Wu, Christian Zentgraf, Xiang W. Zhou
  • Publication number: 20180203913
    Abstract: Several replication subscriptions are defined for a table in a database management system. The table is divided into partitions. Each replication subscription replicates transactions to a range of partitions. Subscriptions are assignable to different consistency groups. Transaction consistency is preserved at the consistency group level. A persistent delay table is created for each of several apply functions. Each apply function processes replication subscriptions for one consistency group, to replicate the table to a target table in parallel. Transactions for a given range of a partition are executed in parallel. When an apply function upon a row of the target table results in an error, the row is stored in the delay table. Application of each row in the delay table is repeatedly retried, and if successful, the row is removed from the delay table.
    Type: Application
    Filed: January 19, 2017
    Publication date: July 19, 2018
    Inventors: Serge Bourbonnais, Austin F. M. D'Costa, Xiao Li, Jonathan W. Wierenga, Xin Wu, Christian Zentgraf, Xiang W. Zhou