Patents by Inventor Michael A. F. Stuy

Michael A. F. Stuy 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).

  • Access concurrency for cached authorization information in relational database systems
    Patent number: 7970787
    Abstract: A method and system for improving access concurrency to information stored in at least one table in a relational database system is disclosed. The method comprises providing a data cache, which stores a portion of the at least one table. The data cache includes a plurality of cache entries, wherein each cache entry comprises a first data item, a second data item, and a cache entry state. The method further comprises retrieving from the at least one table and storing in a cache entry's first data item a representation of committed information for a user, and retrieving from the at least one table and storing in the cache entry's second data item a representation of changes applied to the committed information, but not yet committed in the database system.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: June 28, 2011
    Assignee: International Business Machines Corporation
    Inventors: Michael A. F. Stuy, Paul M. Bird
  • Access concurrency for cached authorization information in relational database systems
    Publication number: 20030204504
    Abstract: A method and system for improving access concurrency to information stored in at least one table in a relational database system is disclosed. The method comprises providing a data cache, which stores a portion of the at least one table. The data cache includes a plurality of cache entries, wherein each cache entry comprises a first data item, a second data item, and a cache entry state. The method further comprises retrieving from the at least one table and storing in a cache entry's first data item a representation of committed information for a user, and retrieving from the at least one table and storing in the cache entry's second data item a representation of changes applied to the committed information, but not yet committed in the database system.
    Type: Application
    Filed: March 17, 2003
    Publication date: October 30, 2003
    Inventors: Michael A.F. Stuy, Paul M. Bird