Patents by Inventor Sidney D. Hester

Sidney D. Hester 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).

  • Replicated database synchronization method whereby primary database is selected queries to secondary databases are referred to primary database, primary database is updated, then secondary databases are updated
    Patent number: 6243715
    Abstract: A database system comprises a plurality of replicated databases and a database provisioning system such that when a record needs to be updated, the database provisioning system selects one of the replicated databases as a selected database with the remaining databases being non-selected databases. The provisioning system transmits to each non-selected database update data for updating the record and pointer data that identifies the selected database. The update data is placed in a memory queue in each non-selected database while the pointer data is written into a pointer field in the record being updated in each non-selected database. The non-selected databases then each transmit a ready-to-commit acknowledgment to the provisioning system. The provisioning system then transmits the update data to the selected database. The pointer field of the record being updated in the selected database is reset indicating that the selected database has been selected.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: June 5, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Robert L. Bogantz, Sidney D. Hester, William W. Kean