Patents by Inventor Makoto Urakawa

Makoto Urakawa 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).

  • Method of controlling a data dictionary directory system in a data base system
    Patent number: 4979109
    Abstract: In a data dictionary directory system, the definition information to be registered in a dictionary is registered being divided into several definition units. A data base system registers the definition information and confirms the coordination of the contents of definition among the definition units. The definition information is registered without confirming the coordination. The coordination is confirmed when it becomes necessary to confirm the coordination among the definition informations registered in the dictionary.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: December 18, 1990
    Assignee: Hitachi Ltd.
    Inventors: Kazuaki Tanaka, Ichiro Yokoyama, Satoshi Wakayama, Yoshito Kamegi, Makoto Urakawa, Mikihiko Tokunaga, Takeshi Kamoshida, Shigeru Yoneda, Kiyotaka Kiyasu
  • Method of processing data access in a database management system with data dictionary directory
    Patent number: 4819160
    Abstract: In a database system having a dictionary/directory for collective management of definition information of the database system, when an application program is compiled to generate an object module, it is confirmed, by referring to the definition information stored in the dictionary, if a database access instruction in the application program is correctly operable. The confirmed definition information is incorporated within an object module which is edited to generate a load module. During execution of the load module, a database access control is effected using the definition information of the database system in the directory as well as the definition information incorporated at the compiling stage.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: April 4, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Kazuaki Tanka, Ichiro Yokoyama, Shigeru Yoneda, Satoshi Wakayama, Makoto Urakawa, Takashi Iihama