Patents by Inventor Eiji Yatabe

Eiji Yatabe 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 and system for data processing with data replication for the same
    Patent number: 8041674
    Abstract: To guarantee the contents of an update by a transaction in a parallel database management system, the database management system includes a replica database management unit that manages the replica database, records synchronous information at a timing at which one of the transaction generated is valid in every database management unit and other transactions are invalid in every database management unit, extracts update information and the synchronous information for creating the replica database from the update logs, and causes the replica database management unit to import the update information of each transaction that has become valid before the synchronous information was recorded.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: October 18, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Yatabe, Nobuo Kawamura, Yasuhiro Takahashi, Hideaki Sunami
  • METHOD AND SYSTEM FOR DATA PROCESSING WITH DATA REPLICATION FOR THE SAME
    Publication number: 20090287749
    Abstract: To guarantee the contents of an update by a transaction in a parallel database management system, the database management system includes a replica database management unit that manages the replica database, records synchronous information at a timing at which one of the transaction generated is valid in every database management unit and other transactions are invalid in every database management unit, extracts update information and the synchronous information for creating the replica database from the update logs, and causes the replica database management unit to import the update information of each transaction that has become valid before the synchronous information was recorded.
    Type: Application
    Filed: July 28, 2009
    Publication date: November 19, 2009
    Inventors: Eiji YATABE, Nobuo KAWAMURA, Yasuhiro TAKAHASHI, Hideaki SUNAMI
  • Method and system for data processing with data replication for the same
    Patent number: 7567989
    Abstract: To guarantee that contents of an update by a transaction in a parallel database management system. A database management system includes a replica database management unit that manages the replica database, records synchronous information at a timing at which one of the transaction generated is valid in every database management unit and other transactions are invalid in every database management unit, extracts update information and the synchronous information for creating the replica database from the update logs, and causes the replica database management unit to import the update information of each transaction that has become valid before the synchronous information was recorded.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: July 28, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Yatabe, Nobuo Kawamura, Yasuhiro Takahashi, Hideaki Sunami
  • Method and system for data processing with data replication for the same
    Publication number: 20060074847
    Abstract: To guarantee that contents of an update by a transaction in a parallel database management system. A database management system includes a replica database management unit that manages the replica database, records synchronous information at a timing at which one of the transaction generated is valid in every database management unit and other transactions are invalid in every database management unit, extracts update information and the synchronous information for creating the replica database from the update logs, and causes the replica database management unit to import the update information of each transaction that has become valid before the synchronous information was recorded.
    Type: Application
    Filed: February 25, 2005
    Publication date: April 6, 2006
    Inventors: Eiji Yatabe, Nobuo Kawamura, Yasuhiro Takahashi, Hideaki Sunami