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    Techniques for combining statement level, procedural, and row level replication
    3.
    发明授权
    Techniques for combining statement level, procedural, and row level replication 有权
    用于组合语句级别，过程级和行级复制的技术

    公开(公告)号：US08589346B2

    公开(公告)日：2013-11-19

    申请号：US13094676

    申请日：2011-04-26

    申请人： Edwina Lu ,  James Stamos ,  Nimar Arora ,  Lik Wong ,  Haobo Xu ,  Thuvan Hoang ,  Byron Wang ,  Lakshminaray Chidambaran

    发明人： Edwina Lu ,  James Stamos ,  Nimar Arora ,  Lik Wong ,  Haobo Xu ,  Thuvan Hoang ,  Byron Wang ,  Lakshminaray Chidambaran

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30575 ,  G06F17/30578

    摘要： Techniques for replicating data in database systems are described. In an example embodiment, a set of changes is received at a destination database, where the set of changes has been applied at a source database and is being replicated from the source database to the destination database. The set of changes is analyzed and it is determined that the set of changes includes two or more of: a subset of row-level changes, a subset of statement-level changes, and a subset of procedure-level changes. A set of dependencies is determined at least between the changes that are included in the subsets of changes. The changes, in the subsets of changes, are assigned to two or more processing elements. The set of changes is applied to the destination database by executing the two or more processing elements in parallel to each other and based on the set of dependencies.

    摘要翻译： 描述了在数据库系统中复制数据的技术。 在示例实施例中，在目的地数据库处接收一组改变，其中该变更集合已经在源数据库处应用并且正在从源数据库复制到目的地数据库。 分析一组变化，并且确定该组更改包括以下两个或多个：行级更改的子集，语句级更改的子集以及过程级更改的子集。 至少在更改子集中包含的更改之间确定一组依赖关系。 更改子集中的更改分配给两个或多个处理元素。 通过相互并行并基于一组依赖关系执行两个或多个处理元件，将该组更改应用于目的地数据库。

    Replicating data between heterogeneous data systems
    4.
    发明申请
    Replicating data between heterogeneous data systems 有权
    在异构数据系统之间复制数据

    公开(公告)号：US20080027987A1

    公开(公告)日：2008-01-31

    申请号：US11496949

    申请日：2006-07-31

    申请人： Nimar Arora ,  Lik Wong ,  Neeraj Shodhan ,  Anand Lakshminath ,  Edwina Lu ,  Byron Wang ,  Thuvan Hoang

    发明人： Nimar Arora ,  Lik Wong ,  Neeraj Shodhan ,  Anand Lakshminath ,  Edwina Lu ,  Byron Wang ,  Thuvan Hoang

    IPC分类号： G06F17/00

    CPC分类号： G06F17/30575 ,  G06F17/30212 ,  G06F17/30569

    摘要： A method and apparatus for replicating data between heterogeneous databases is provided. Data is replicated between two heterogeneous databases with the use of a volatile storage queue, enabling the rapid replication of data across databases provided by different vendors or operating on different platforms. According to one embodiment, an in-memory queue is used to queue change operations to be performed on a target data repository. The change operations may be operations that were applied to a source data repository. An apply process retrieves the change operations from in-memory queue and commits the change operations to persistent storage. When the change operations have been committed, the apply process notifies the source platform that the particular change operation has been stored.

    摘要翻译： 提供了一种用于在异构数据库之间复制数据的方法和装置。 数据通过使用易失性存储队列在两个异构数据库之间进行复制，从而可以跨不同供应商提供的数据或在不同平台上运行的数据快速复制数据。 根据一个实施例，使用内存中队列来对要在目标数据存储库上执行的更改操作进行排队。 更改操作可能是应用于源数据存储库的操作。 应用进程从内存队列中检索更改操作，并将更改操作提交给持久存储。 当更改操作已经提交时，应用程序通知源平台已经存储了特定的更改操作。

    Techniques for Combining Statement Level, Procedural, and Row Level Replication
    5.
    发明申请
    Techniques for Combining Statement Level, Procedural, and Row Level Replication 有权
    组合语句级别，过程和行级复制的技术

    公开(公告)号：US20120278282A1

    公开(公告)日：2012-11-01

    申请号：US13094676

    申请日：2011-04-26

    申请人： Edwina Lu ,  James Stamos ,  Nimar Arora ,  Lik Wong ,  Haobo Xu ,  Thuvan Hoang ,  Byron Wang ,  Lakshminaray Chidambaran

    发明人： Edwina Lu ,  James Stamos ,  Nimar Arora ,  Lik Wong ,  Haobo Xu ,  Thuvan Hoang ,  Byron Wang ,  Lakshminaray Chidambaran

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30575 ,  G06F17/30578

    摘要： Techniques for replicating data in database systems are described. In an example embodiment, a set of changes is received at a destination database, where the set of changes has been applied at a source database and is being replicated from the source database to the destination database. The set of changes is analyzed and it is determined that the set of changes includes two or more of: a subset of row-level changes, a subset of statement-level changes, and a subset of procedure-level changes. A set of dependencies is determined at least between the changes that are included in the subsets of changes. The changes, in the subsets of changes, are assigned to two or more processing elements. The set of changes is applied to the destination database by executing the two or more processing elements in parallel to each other and based on the set of dependencies.

    摘要翻译： 描述了在数据库系统中复制数据的技术。 在示例实施例中，在目的地数据库处接收一组改变，其中该变更集合已经在源数据库处应用并且正在从源数据库复制到目的地数据库。 分析一组变化，并且确定该组更改包括以下两个或多个：行级更改的子集，语句级更改的子集以及过程级别更改的子集。 至少在更改子集中包含的更改之间确定一组依赖关系。 更改子集中的更改分配给两个或多个处理元素。 通过相互并行并基于一组依赖关系执行两个或多个处理元件，将该组更改应用于目的地数据库。

    Replicating data between heterogeneous data systems
    6.
    发明授权
    Replicating data between heterogeneous data systems 有权
    在异构数据系统之间复制数据

    公开(公告)号：US07668878B2

    公开(公告)日：2010-02-23

    申请号：US11496949

    申请日：2006-07-31

    申请人： Nimar Arora ,  Lik Wong ,  Neeraj Shadhan ,  Anand Lakshminath ,  Edwina Lu ,  Byron Wang ,  Thuvan Hoang

    发明人： Nimar Arora ,  Lik Wong ,  Neeraj Shadhan ,  Anand Lakshminath ,  Edwina Lu ,  Byron Wang ,  Thuvan Hoang

    IPC分类号： G06F17/30 ,  G06F12/00

    CPC分类号： G06F17/30575 ,  G06F17/30212 ,  G06F17/30569

    摘要： A method and apparatus for replicating data between heterogeneous databases is provided. Data is replicated between two heterogeneous databases with the use of a volatile storage queue, enabling the rapid replication of data across databases provided by different vendors or operating on different platforms. According to one embodiment, an in-memory queue is used to queue change operations to be performed on a target data repository. The change operations may be operations that were applied to a source data repository. An apply process retrieves the change operations from in-memory queue and commits the change operations to persistent storage. When the change operations have been committed, the apply process notifies the source platform that the particular change operation has been stored.

    摘要翻译： 提供了一种用于在异构数据库之间复制数据的方法和装置。 数据通过使用易失性存储队列在两个异构数据库之间进行复制，从而可以跨不同供应商提供的数据或在不同平台上运行的数据快速复制数据。 根据一个实施例，使用内存中队列来对要在目标数据存储库上执行的更改操作进行排队。 更改操作可能是应用于源数据存储库的操作。 应用进程从内存队列中检索更改操作，并将更改操作提交给持久存储。 当更改操作已经提交时，应用程序通知源平台已经存储了特定的更改操作。

    Utilizing rules in a distributed information sharing system
    7.
    发明授权
    Utilizing rules in a distributed information sharing system 有权
    利用分布式信息共享系统中的规则

    公开(公告)号：US07613741B2

    公开(公告)日：2009-11-03

    申请号：US10449873

    申请日：2003-05-30

    申请人： Edwina Lu ,  Lik Wong ,  Sanjay Kaluskar ,  James Stamos ,  Neerja Bhatt ,  Wei Wang

    发明人： Edwina Lu ,  Lik Wong ,  Sanjay Kaluskar ,  James Stamos ,  Neerja Bhatt ,  Wei Wang

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30575 ,  Y10S707/99953

    摘要： Described herein are various approaches that allow rules to be used to specify actions, that alleviate the complexity and burden of developing and maintaining rules in a rules-based messaging system, and that provide more efficient ways of evaluating rules. The approaches allow rules to specify user-defined transformation functions for transforming messages, to specify when and how to perform row migration, and to specify other types of actions. Rules are grouped into rule sets. Several types of rule sets, referred to as positive and negative rule sets, allow users to use rules that are less complex to develop and maintain. Rule sets are evaluated more efficiently by attempting to evaluate the rule set with less information than is needed to evaluate all the rules in the rule set. Also, the results of rules evaluations that are based on a set of values are cached for later retrieval.

    摘要翻译： 这里描述了允许规则用于指定动作的各种方法，其减轻了在基于规则的消息传递系统中开发和维护规则的复杂性和负担，并且提供了更有效的评估规则的方式。 这些方法允许规则指定用于转换消息的用户定义的转换功能，指定何时以及如何执行行迁移，并指定其他类型的操作。 规则分为规则集。 称为正和负规则集的几种类型的规则集允许用户使用开发和维护不太复杂的规则。 通过尝试使用比评估规则集中的所有规则所需的信息更少的信息来评估规则集，可以更有效地评估规则集。 此外，基于一组值的规则评估结果被缓存以供以后检索。

    AUTOMATIC ERROR CORRECTION FOR REPLICATION AND INSTANTANEOUS INSTANTIATION
    8.
    发明申请
    AUTOMATIC ERROR CORRECTION FOR REPLICATION AND INSTANTANEOUS INSTANTIATION 有权
    自动错误校正用于复制和即时消除

    公开(公告)号：US20090119346A1

    公开(公告)日：2009-05-07

    申请号：US11935939

    申请日：2007-11-06

    申请人： Edwina Lu ,  Mahesh Subramaniam ,  Lik Wong ,  James Stamos ,  Nimar Singh Arora

    发明人： Edwina Lu ,  Mahesh Subramaniam ,  Lik Wong ,  James Stamos ,  Nimar Singh Arora

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30578 ,  G06F11/2097

    摘要： An approach is provided to automatically resolve conflict between instantiation and ongoing data replication operations. In an embodiment, incremental change records that describe one or more database operations are received at a sink entity. Here, all of the one or more database operations have occurred in a second database after a particular time. A first database operation in the one or more database operations to a particular row in the first database is applied. When a conflict with a second database operation that operates on the particular row is detected, one or more compensating actions, which may, but are not limited to, be a different database operation and/or an operation that creates a conflict log entry, may be performed. Here, the second database operation has occurred in the second database prior to the particular time. When the second database operation is to be performed, an appropriate operation may be performed.

    摘要翻译： 提供了一种方法来自动解决实例化和正在进行的数据复制操作之间的冲突。 在实施例中，描述一个或多个数据库操作的增量更改记录在汇实体处被接收。 这里，在特定时间之后，所有一个或多个数据库操作都发生在第二数据库中。 应用第一个数据库中特定行的一个或多个数据库操作中的第一个数据库操作。 当检测到对在特定行上操作的第二数据库操作的冲突时，一个或多个补偿动作（其可以但不限于是不同的数据库操作和/或创建冲突日志条目的操作）可以 被执行。 这里，第二数据库操作已经在特定时间之前在第二数据库中发生。 当要执行第二数据库操作时，可以执行适当的操作。

    Partial evaluation of rule sets
    10.
    发明授权
    Partial evaluation of rule sets 有权
    规则集的部分评估

    公开(公告)号：US08005802B2

    公开(公告)日：2011-08-23

    申请号：US10452850

    申请日：2003-05-30

    申请人： Edwina Lu ,  Lik Wong ,  Sanjay Kaluskar ,  James Stamos ,  Neerja Bhatt ,  Wei Wang

    发明人： Edwina Lu ,  Lik Wong ,  Sanjay Kaluskar ,  James Stamos ,  Neerja Bhatt ,  Wei Wang

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30575 ,  Y10S707/99939 ,  Y10S707/99942 ,  Y10S707/99943

    摘要： Described herein are various approaches that allow rules to be used to specify actions, that alleviate the complexity and burden of developing and maintaining rules in a rules-based messaging system, and that provide more efficient ways of evaluating rules. The approaches allow rules to specify user-defined transformation functions for transforming messages, to specify when and how to perform row migration, and to specify other types of actions. Rules are grouped into rule sets. Several types of rule sets, referred to as positive and negative rule sets, allow users to use rules that are less complex to develop and maintain. Rule sets are evaluated more efficiently by attempting to evaluate the rule set with less information than is needed to evaluate all the rules in the rule set. Also, the results of rules evaluations that are based on a set of values are cached for later retrieval.

    摘要翻译： 这里描述了允许规则用于指定动作的各种方法，其减轻了在基于规则的消息传递系统中开发和维护规则的复杂性和负担，并且提供了更有效的评估规则的方式。 这些方法允许规则指定用于转换消息的用户定义的转换功能，指定何时以及如何执行行迁移，并指定其他类型的操作。 规则分为规则集。 称为正和负规则集的几种类型的规则集允许用户使用开发和维护不太复杂的规则。 通过尝试使用比评估规则集中的所有规则所需的信息更少的信息来评估规则集，可以更有效地评估规则集。 此外，基于一组值的规则评估结果被缓存以供以后检索。