Patents by Inventor Eugene P. Jarema

Eugene P. Jarema 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).

  • Method for resolving collisions in a database replication system by relaxing a constraint that contributes to collisions, or removing the cause of the constraint that contributes to the collisions
    Patent number: 8086661
    Abstract: A method is provided for resolving collisions in a database replication system. The system includes a source database and a target database, wherein changes made at the source database are replicated to the target database. Each database has one or more tables, and at least one of the tables has multiple constraints. A collision is detected during data replication as a result of one of the tables having multiple constraints. One constraint that contributes to the collision is identified. The constraint that contributes to the collision is relaxed, or the cause of the constraint that contributes to the collision is removed. This process is repeated for all additional constraints that contribute to the collision. In this manner, the collision is resolved.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: December 27, 2011
    Assignee: Gravic, Inc.
    Inventors: Bruce D. Holenstein, Gary E. Strickler, Eugene P. Jarema, Paul J. Holenstein
  • Control of a data replication engine using attributes associated with a transaction
    Patent number: 7613740
    Abstract: A data replication engine is controlled in a system that replicates data associated with a plurality of transactions from a source database to a target database. The system includes a change queue that contains transaction data associated with the transactions. The system maintains one or more attributes outside of the change queue which are associated with transactions. One or more attributes outside of the change queue are identified which are associated with a transaction. The one or more of the identified attributes are then used to control the replication engine.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: November 3, 2009
    Assignee: Gravic, Inc.
    Inventors: Bruce D. Holenstein, Gary E. Strickler, Eugene P. Jarema, Paul J. Holenstein
  • METHOD FOR RESOLVING COLLISIONS IN A DATABASE REPLICATION SYSTEM BY RELAXING A CONSTRAINT THAT CONTRIBUTES TO COLLISIONS, OR REMOVING THE CAUSE OF THE CONSTRAINT THAT CONTRIBUTES TO THE COLLISIONS
    Publication number: 20090177710
    Abstract: A method is provided for resolving collisions in a database replication system. The system includes a source database and a target database, wherein changes made at the source database are replicated to the target database. Each database has one or more tables, and at least one of the tables has multiple constraints. A collision is detected during data replication as a result of one of the tables having multiple constraints. One constraint that contributes to the collision is identified. The constraint that contributes to the collision is relaxed, or the cause of the constraint that contributes to the collision is removed. This process is repeated for all additional constraints that contribute to the collision. In this manner, the collision is resolved.
    Type: Application
    Filed: March 12, 2009
    Publication date: July 9, 2009
    Applicant: GRAVIC, INC.
    Inventors: Bruce D. HOLENSTEIN, Gary E. STRICKLER, Eugene P. JAREMA, Paul J. HOLENSTEIN
  • High availability designated winner data replication
    Patent number: 7523110
    Abstract: Collisions are resolved in a database replication system. The system includes a plurality of nodes arranged in either a master-slave or network configuration. Each node includes a database, wherein changes made at the databases of each node are replicated to the databases at one or more of the other nodes. When a collision is detected during data replication between multiple nodes, the collision is resolved by a rule that gives precedence to certain nodes over other nodes.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: April 21, 2009
    Assignee: Gravic, Inc.
    Inventors: Bruce D. Holenstein, Gary E. Strickler, Eugene P. Jarema, Paul J. Holenstein