Patents by Inventor Douglas W. Kerwin

Douglas W. Kerwin 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: 6898609
    Abstract: A computer system for providing load balancing and scalable access to a network database system by providing multiple database instances with each instance being substantially identical in data content, database structure, and primary key system. Requests from users are received by the system, examined to determine their nature as transactional or non-transactional and, in the case of non-transactional queries, scattered among the multiple database instances. Such scattering of queries permits multiple instances of the database to be serving responses to multiple users at substantially the same time. In the case of transactional queries, the system automatically propagates the transactional query to all instances of the database to maintain homogeneity.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: May 24, 2005
    Inventor: Douglas W. Kerwin
  • Publication number: 20030212660
    Abstract: A computer system for providing load balancing and scalable access to a network database system by providing multiple database instances with each instance being substantially identical in data content, database structure, and primary key system. Requests from users are received by the system, examined to determine their nature as transactional or non-transactional and, in the case of non-transactional queries, scattered among the multiple database instances. Such scattering of queries permits multiple instances of the database to be serving responses to multiple users at substantially the same time. In the case of transactional queries, the system automatically propagates the transactional query to all instances of the database to maintain homogeneity.
    Type: Application
    Filed: May 8, 2003
    Publication date: November 13, 2003
    Inventor: Douglas W. Kerwin