Patents by Inventor Tyrone Yu

Tyrone Yu 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).

  • Restoring database consistency integrity
    Patent number: 9875266
    Abstract: Techniques for restoring point-in-time and transaction consistency across consistency groups between a first and a second independent database management system (DBMS) for a disaster recovery. Several consistency groups (CGs) are defined for replication. For each CG in the first DBMS data changes are transmitted to a second DBMS. A timestamp representing a most recently received commit log record or a heartbeat during periods of inactivity for a CG is stored in a database table at regular intervals. At regular intervals, the timestamp is compared with timestamps for other CGs to identify a common time at which data to be applied to the CGs in the second DBMS have been received into a recoverable data store. The received data is applied to the CGs in the second DBMS up to the common time.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: January 23, 2018
    Assignee: International Business Machines Corporation
    Inventors: Serge Bourbonnais, Austin F. M. D'Costa, You-Chin Fuh, James Z. Teng, Tyrone Yu
  • Restoring database consistency integrity
    Patent number: 9858305
    Abstract: Techniques for restoring point-in-time and transaction consistency across consistency groups between a first and a second independent database management system (DBMS) for a disaster recovery. Several consistency groups (CGs) are defined for replication. For each CG in the first DBMS data changes are transmitted to a second DBMS. A timestamp representing a most recently received commit log record or a heartbeat during periods of inactivity for a CG is stored in a database table at regular intervals. At regular intervals, the timestamp is compared with timestamps for other CGs to identify a common time at which data to be applied to the CGs in the second DBMS have been received into a recoverable data store. The received data is applied to the CGs in the second DBMS up to the common time.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: January 2, 2018
    Assignee: International Business Machines Corporation
    Inventors: Serge Bourbonnais, Austin F. M. D'Costa, You-Chin Fuh, James Z. Teng, Tyrone Yu
  • RESTORING DATABASE CONSISTENCY INTEGRITY
    Publication number: 20150254296
    Abstract: Techniques for restoring point-in-time and transaction consistency across consistency groups between a first and a second independent database management system (DBMS) for a disaster recovery. Several consistency groups (CGs) are defined for replication. For each CG in the first DBMS data changes are transmitted to a second DBMS. A timestamp representing a most recently received commit log record or a heartbeat during periods of inactivity for a CG is stored in a database table at regular intervals. At regular intervals, the timestamp is compared with timestamps for other CGs to identify a common time at which data to be applied to the CGs in the second DBMS have been received into a recoverable data store. The received data is applied to the CGs in the second DBMS up to the common time.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 10, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Serge Bourbonnais, Austin F. M. D'Costa, You-Chin Fuh, James Z. Teng, Tyrone Yu
  • RESTORING DATABASE CONSISTENCY INTEGRITY
    Publication number: 20150254298
    Abstract: Techniques for restoring point-in-time and transaction consistency across consistency groups between a first and a second independent database management system (DBMS) for a disaster recovery. Several consistency groups (CGs) are defined for replication. For each CG in the first DBMS data changes are transmitted to a second DBMS. A timestamp representing a most recently received commit log record or a heartbeat during periods of inactivity for a CG is stored in a database table at regular intervals. At regular intervals, the timestamp is compared with timestamps for other CGs to identify a common time at which data to be applied to the CGs in the second DBMS have been received into a recoverable data store. The received data is applied to the CGs in the second DBMS up to the common time.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 10, 2015
    Inventors: Serge Bourbonnais, Austin F. M. D'Costa, You-Chin Fuh, James Z. Teng, Tyrone Yu