Patents by Inventor Ramkrishna Chatterjee

Ramkrishna Chatterjee 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).

  • System and method for enforcing referential constraints between versioned database tables
    Patent number: 6584476
    Abstract: A version control system is described for use in connection with a database management system to facilitate versioning of a database table, the system including a database table and a version control module. The database table comprises a plurality of records, each record including at least one data field for storing user data and at least some of the records including a version control field including version control information. The version control module is configured to, in response to a user query related to the database table and related to a version, generate an augmented query for processing by the data base management system, the augmented query relating to the user query and the version control information.
    Type: Grant
    Filed: April 22, 2000
    Date of Patent: June 24, 2003
    Assignee: Oracle Corp.
    Inventors: Ramkrishna Chatterjee, Ramesh Vasudevan, Gopalan Arun, David Mor