Patents by Inventor Sakayuki Hikita

Sakayuki Hikita 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).

  • Join operation processing system in distributed data base management system
    Patent number: 4811207
    Abstract: A join operation processing system and a method of operating the system is usable in a distributed database management system including multiple local database management systems, computers employing distributed databases stored in the local database management systems, and a communication network for connecting said local database management systems and the computers. The join operation processing system can perform a join operation on a relational database. Each of the computers instructs prior computer to performing the join operation, and the database management system, managing relations associated with the join operation to read definitions so as to define said relations, reads the read definitions to thereby determine a process to process the join operation, and issues a request to the prescribed database management system to perform join operation processing based on the determination.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: March 7, 1989
    Assignee: Oki Electric Industry Company, Ltd.
    Inventors: Sakayuki Hikita, Suguru Kawakami, Hiromi Haniuda, Akifumi Sakamoto, Hideki Yamamoto