Patents by Inventor Iderpal S. Narang

Iderpal S. Narang 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 for parallel processing of complex read-only database queries using master and slave central processor complexes
    Patent number: 5495606
    Abstract: A parallel query processing system comprises a front end processor, a query processing complex attached to the front end processor, and a database on a data repository attached by a first path to the front end processor, and by one or more additional paths to one or more slave processors within the query processing complex. An external operations command processor within the front end processor quiesces database managers in the slave processors to permit maintenance operations by the front end processor, and restarts the slave processors in read-only mode after maintenance operation completion. A splitter/scheduler function in a master processor within the query processor complex receives complex read-only queries from the front end processor, splits them into query elements, schedules the query elements for execution on the slave processors and recombines the execution results to be sent back to the front end processor.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: February 27, 1996
    Assignee: International Business Machines Corporation
    Inventors: Terry L. Borden, William K. Kelley, Iderpal S. Narang, Bharat D. Rathi, David J. Wisneski