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    • 3. 发明申请
    • UPDATE PROTOCOL FOR CLIENT-SIDE ROUTING INFORMATION
    • 用于客户端路由信息的更新协议
    • US20130275550A1
    • 2013-10-17
    • US13449081
    • 2012-04-17
    • Juchang LeeJaeyun NohChulwon LeeMichael MuehleAlexander SchroederMarco PaskampSang Kyun Cha
    • Juchang LeeJaeyun NohChulwon LeeMichael MuehleAlexander SchroederMarco PaskampSang Kyun Cha
    • G06F15/16G06F17/30
    • G06F17/30545
    • A system includes reception of a first query from a client device at a first database node of a database instance, determination of routing information associated with the first query, compilation of the first query at the first database node to generate first compiled code, transmission of the first compiled code and the routing information to the client device, reception of the compiled code from the client device at a second database node, determination, at the second database node, that data associated with the compiled query is associated with a third database node, transmission of the compiled code from the second database node to the third database node, reception of query results at the second database node from the third database node, and transmission of the query results and an indication to update the routing information from the second database node to the client device.
    • 系统包括在数据库实例的第一数据库节点处从客户端设备接收第一查询,确定与第一查询相关联的路由信息​​,在第一数据库节点处编译第一查询以生成第一编译代码,传输 第一编译代码和到客户端设备的路由信息​​,在第二数据库节点从客户端设备接收编译代码,在第二数据库节点确定与编译查询相关联的数据与第三数据库节点 将编译代码从第二数据库节点传输到第三数据库节点,从第三数据库节点接收第二数据库节点处的查询结果,以及发送查询结果以及从第二数据库更新路由信息的指示 节点到客户端设备。
    • 6. 发明授权
    • Update protocol for client-side routing information
    • 更新客户端路由信息协议
    • US09037677B2
    • 2015-05-19
    • US13449081
    • 2012-04-17
    • Juchang LeeJaeyun NohChulwon LeeMichael MuehleAlexander SchroederMarco PaskampSang Kyun Cha
    • Juchang LeeJaeyun NohChulwon LeeMichael MuehleAlexander SchroederMarco PaskampSang Kyun Cha
    • G06F15/16G06F17/30
    • G06F17/30545
    • A system includes reception of a first query from a client device at a first database node of a database instance, determination of routing information associated with the first query, compilation of the first query at the first database node to generate first compiled code, transmission of the first compiled code and the routing information to the client device, reception of the compiled code from the client device at a second database node, determination, at the second database node, that data associated with the compiled query is associated with a third database node, transmission of the compiled code from the second database node to the third database node, reception of query results at the second database node from the third database node, and transmission of the query results and an indication to update the routing information from the second database node to the client device.
    • 系统包括在数据库实例的第一数据库节点处从客户端设备接收第一查询,确定与第一查询相关联的路由信息​​,在第一数据库节点处编译第一查询以生成第一编译代码,传输 第一编译代码和到客户端设备的路由信息​​,在第二数据库节点从客户端设备接收编译代码,在第二数据库节点确定与编译查询相关联的数据与第三数据库节点 将编译代码从第二数据库节点传输到第三数据库节点,从第三数据库节点接收第二数据库节点处的查询结果,以及发送查询结果以及从第二数据库更新路由信息的指示 节点到客户端设备。
    • 10. 发明申请
    • Version Garbage Collection Using Snapshot Lists
    • 版本垃圾收集使用快照列表
    • US20140149353A1
    • 2014-05-29
    • US13750204
    • 2013-01-25
    • Juchang LeeChang Gyoo ParkYongjae ChuhJaeyun NohMichael Muehle
    • Juchang LeeChang Gyoo ParkYongjae ChuhJaeyun NohMichael Muehle
    • G06F17/30
    • G06F17/3015G06F17/3023G06F17/30353G06F17/30356
    • Systems, methods and computer program product embodiments for providing version garbage collection using snapshot lists are disclosed herein. Version garbage collection using snapshot lists includes storing, by at least one processor, versions of a record in a database table, the record comprising a record value and a version timestamp, storing, by the at least one processor, active snapshots in two levels of active snapshot lists, an active snapshot comprising a transaction identifier and a snapshot timestamp, determining, by the at least one processor, a minimum active snapshot from the active snapshots in the two levels of active snapshot lists and deleting, by the at least one processor, versions of the record having a version timestamp earlier than a snapshot timestamp of the minimum active snapshot.
    • 本文公开了使用快照列表提供版本垃圾收集的系统,方法和计算机程序产品实施例。 使用快照列表的版本垃圾收集包括通过至少一个处理器存储数据库表中的记录的版本,所述记录包括记录值和版本时间戳,由所述至少一个处理器存储两个级别的活动快照 活动快照列表,包括事务标识符和快照时间戳的活动快照,由所述至少一个处理器确定所述两个活动快照列表中的活动快照中的最小主动快照,并且由所述至少一个处理器 ,该记录的版本的版本时间戳早于最小主动快照的快照时间戳。