Patents by Inventor Seoyoon Choi

Seoyoon Choi 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).

  • Real-time cross-system database replication for hybrid-cloud elastic scaling and high-performance data virtualization
    Patent number: 11263236
    Abstract: RTR of a database transaction to a replica table may include receiving replication and transaction commit log entries (representing a database transaction). The replication log entry has a row-ID value, and the row at the replica table has a row-ID value. The replication log entry may be dispatched to a parallel log replayer and the associated transaction commit log entry to a transaction commit log replayer. The row-ID values may be compared, and the replication log entry is replayed at the parallel log replayer based on the comparison. The database transaction may then be committed to the replica table by replaying the associated transaction commit log entry at the transaction log replayer, wherein the database transaction is associated with row-level parallel replay having transactional consistency and DDL replication and reconstruction of a DDL statement at the replica system is associated with one or multiple metadata update log entries.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: March 1, 2022
    Assignee: SAP SE
    Inventors: Juchang Lee, Seoyoon Choi, Eunsang Kim, Kyu Hwan Kim, Joo Yeon Lee, Hyoung Jun Na
  • REAL-TIME CROSS-SYSTEM DATABASE REPLICATION FOR HYBRID-CLOUD ELASTIC SCALING AND HIGH-PERFORMANCE DATA VIRTUALIZATION
    Publication number: 20210149915
    Abstract: RTR of a database transaction to a replica table may include receiving replication and transaction commit log entries (representing a database transaction). The replication log entry has a row-ID value, and the row at the replica table has a row-ID value. The replication log entry may be dispatched to a parallel log replayer and the associated transaction commit log entry to a transaction commit log replayer. The row-ID values may be compared, and the replication log entry is replayed at the parallel log replayer based on the comparison. The database transaction may then be committed to the replica table by replaying the associated transaction commit log entry at the transaction log replayer, wherein the database transaction is associated with row-level parallel replay having transactional consistency and DDL replication and reconstruction of a DDL statement at the replica system is associated with one or multiple metadata update log entries.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 20, 2021
    Inventors: Juchang Lee, Seoyoon Choi, Eunsang Kim, Kyu Hwan Kim, Joo Yeon Lee, Hyoung Jun Na