Patents Examined by CanLinh Nguyen
  • Patent number: 6934727
    Abstract: Each node in a network accessing a common database caches a copy of the database tables it uses and updates those tables based on changes made by other nodes in a coherent cache, i.e., those node that also have a copy of the tables in their cache. When a new node joins the coherent cache, dynamic synchronization of the table is performed by having one of the existing nodes act as a source to populate the table(s) required on the new (destination) node from its own copy. The dynamic synchronization controls the population operation and allows for the populating of tables on the destination node from partially populated tables on the source node. The dynamic synchronization of the tables permits database updates to continue to be made to the tables by the existing nodes in the coherent cache and provides a mechanism to propagate the committed updates to the tables on the destination node.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: August 23, 2005
    Assignee: Microsoft Corporation
    Inventors: Brian T. Berkowitz, Peter A. Christofferson