Patents by Inventor ANDREW S.C. WITKOWSKI

ANDREW S.C. WITKOWSKI 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).

  • Maintaining staleness information for aggregate data
    Patent number: 9659039
    Abstract: Computer systems, machine-implemented methods, and stored instructions are provided herein for maintaining information that describes aggregate characteristics of data within zones. Stored data may be separated into defined zone(s). Data structure(s), such as zone map(s), may store, for each of the zone(s), aggregate characteristic(s) of data in the zone, and a stored indication of whether or not the zone is stale. When a change is made to data in a particular zone that was not stale, a zone manager causes the particular zone to become stale if the change can result in the particular zone having data that is not included in the particular zone's stored aggregate characteristic(s). On the other hand, if the change cannot result in the particular zone having data that is not included in the particular zone's stored aggregate characteristic(s), then the zone manager does not cause the particular zone to become stale.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: May 23, 2017
    Assignee: Oracle International Corporation
    Inventors: Mohamed Ziauddin, Andrew S.C. Witkowski, You Jung Kim
  • MAINTAINING STALENESS INFORMATION FOR AGGREGATE DATA
    Publication number: 20150088812
    Abstract: Computer systems, machine-implemented methods, and stored instructions are provided herein for maintaining information that describes aggregate characteristics of data within zones. Stored data may be separated into defined zone(s). Data structure(s), such as zone map(s), may store, for each of the zone(s), aggregate characteristic(s) of data in the zone, and a stored indication of whether or not the zone is stale. When a change is made to data in a particular zone that was not stale, a zone manager causes the particular zone to become stale if the change can result in the particular zone having data that is not included in the particular zone's stored aggregate characteristic(s). On the other hand, if the change cannot result in the particular zone having data that is not included in the particular zone's stored aggregate characteristic(s), then the zone manager does not cause the particular zone to become stale.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 26, 2015
    Inventors: MOHAMED ZIAUDDIN, ANDREW S.C. WITKOWSKI, YOU JUNG KIM