Patents by Inventor Ronit Hartmann

Ronit Hartmann 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 and system for purging tombstones for deleted data items in a replicated database
    Patent number: 6256634
    Abstract: A method and system coordinates the purging of tombstones for data items deleted from a directory service database of a message queuing system. The directory service database is a replicated database with a plurality of servers, and the data items owned by one server are replicated by all other servers in the system. The directory service database supports a synchronization mechanism for a slave server to request for replication data from a master server. To support the synchronization mechanism, a tombstone is set up each time a server deletes a data item from its local database. For a slave server of a first type, the master server purges the tombstone after receiving an acknowledgment from the slave server for receipt of replication information regarding the deletion. For a slave server of a second type, the master server purges the tombstone after the tombstone has become sufficiently aged.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: July 3, 2001
    Assignee: Microsoft Corporation
    Inventors: Lior Moshaiov, Ronit Hartmann