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    • 19. 发明申请
    • DATABASE MANAGEMENT METHOD
    • 数据库管理方法
    • US20120254138A1
    • 2012-10-04
    • US13513773
    • 2011-08-08
    • Hiroyuki Yamada
    • Hiroyuki Yamada
    • G06F7/00G06F17/30
    • G06F17/30289G06F17/30008G06F17/30345G06F17/30575
    • The present invention realize a method of managing a database capable of hierarchically building master nodes, and efficiently performing the update of the master nodes. A lower-level master node sends, to a higher-level master node, a write set expanded in its own memory including a shadow copy of its own database and a heaptuple map, and the higher-level master node that received the write set verifies whether the update has already been executed and sends the record of this update to the lower-level master node as a transaction log, whereby the database can be updated efficiently and consistently from the lower-level master node to the higher-level master node, and from the higher-level master node to the lower-level master node under its control.
    • 本发明实现了一种管理能够分层构建主节点的数据库的方法,并且有效地执行主节点的更新。 下级主节点向较高级别的主节点发送在其自己的存储器中扩展的写集合,其中包括其自己的数据库的影子副本和一个对等映射,并且接收到该写集的上级主节点验证 是否已经执行了更新,并将此更新的记录作为事务日志发送到下级主节点,从而可以从低级主节点到上级主节点高效一致地更新数据库, 并从其上级主节点到其控制的下级主节点。