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    • 14. 发明申请
    • SYSTEM, METHOD, AND APPARATUS FOR SEARCHING INFORMATION ACROSS DISTRIBUTED DATABASES
    • 用于搜索分布式数据库信息的系统,方法和装置
    • US20090019007A1
    • 2009-01-15
    • US12046022
    • 2008-03-11
    • Hiroshi Niina
    • Hiroshi Niina
    • G06F17/30
    • G06F17/30463G06F17/30545
    • A master node includes a locality determining table that stores data structures of obtained items, types of conditions that the items should meet, and locality information; a plan generating unit that generates a search plan; a determining unit that obtains the locality information corresponding to the data structure of the item obtained as a sequence and the type of condition for the item and determines whether the item is stored in a distributed manner across different databases; an updating unit that removes a request of creating a logical sequence from the search plan and updates the search plan when the item is not stored in a distributed manner across the different databases; and an execution requestexecution requesting unit that notifies a slave node of a search plan execution request. The slave node includes an execution request receiving unit and an executing unit that executes the search plan.
    • 主节点包括存储获得的项目的数据结构的位置确定表,项目应该满足的条件类型以及地点信息; 生成搜索计划的计划生成单元; 获取与作为序列获得的项目的数据结构相对应的位置信息和项目的条件类型的确定单元,并且确定该项目是否以分布式方式跨越不同的数据库存储; 更新单元,当所述项目不以分布式方式跨越所述不同数据库存储时,从所述搜索计划中去除创建逻辑序列的请求,并更新所述搜索计划; 以及执行请求执行请求单元,其向从属节点通知搜索计划执行请求。 从节点包括执行请求接收单元和执行搜索计划的执行单元。
    • 19. 发明授权
    • System, method, and apparatus for searching information across distributed databases
    • 用于在分布式数据库中搜索信息的系统,方法和装置
    • US08019778B2
    • 2011-09-13
    • US12046022
    • 2008-03-11
    • Hiroshi Niina
    • Hiroshi Niina
    • G06F7/00G06F17/30
    • G06F17/30463G06F17/30545
    • A master node includes a locality determining table that stores data structures of obtained items, types of conditions that the items should meet, and locality information; a plan generating unit that generates a search plan; a determining unit that obtains the locality information corresponding to the data structure of the item obtained as a sequence and the type of condition for the item and determines whether the item is stored in a distributed manner across different databases; an updating unit that removes a request of creating a logical sequence from the search plan and updates the search plan when the item is not stored in a distributed manner across the different databases; and an execution requestexecution requesting unit that notifies a slave node of a search plan execution request. The slave node includes an execution request receiving unit and an executing unit that executes the search plan.
    • 主节点包括存储获得的项目的数据结构的位置确定表,项目应该满足的条件类型以及地点信息; 生成搜索计划的计划生成单元; 获取与作为序列获得的项目的数据结构相对应的位置信息和项目的条件类型的确定单元,并且确定该项目是否以分布式方式跨越不同数据库存储; 更新单元,当所述项目不以分布式方式跨越所述不同数据库存储时,从所述搜索计划中去除创建逻辑序列的请求,并更新所述搜索计划; 以及执行请求执行请求单元,其向从属节点通知搜索计划执行请求。 从节点包括执行请求接收单元和执行搜索计划的执行单元。