Method and system for speeding up rebuild of user-defined indexes during partition maintenance operations in the database systems
    2.
    发明申请
    Method and system for speeding up rebuild of user-defined indexes during partition maintenance operations in the database systems 有权
    在数据库系统中的分区维护操作期间加快重建用户定义索引的方法和系统

    公开(公告)号:US20090177622A1

    公开(公告)日:2009-07-09

    申请号:US12007325

    申请日:2008-01-09

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30336

    摘要: A method, system, and computer program product provides improved performance for rebuild of user-defined indexes during partition maintenance operations (partition split, merge, and move). A method of maintaining a index of a partitioned database table comprises performing a partition maintenance operation on the partitioned database table wherein a plurality of rows of the partitioned database table are moved from one partition to another, storing mapping information for at least some of the plurality of moved rows, including an old mapping for each of the moved rows and a corresponding new mapping for each of the moved rows, and when rebuilding the index, replacing an old mapping in the index for each of the plurality of moved rows with the corresponding stored new mapping for each of the plurality of moved rows.

    摘要翻译: 方法,系统和计算机程序产品提供了在分区维护操作(分区拆分,合并和移动)期间重建用户定义索引的改进性能。 维护分区数据库表的索引的方法包括对分区数据库表执行分区维护操作,其中分区数据库表的多行被从一个分区移动到另一分区,存储多个分区数据库表中的至少一个的映射信息 移动的行,包括每个移动的行的旧映射和每个被移动的行的对应的新映射,以及当重建索引时,用对应的多个移动的行中的每一个代替索引中的旧映射 为多个移动的行中的每一个存储新的映射。

    Materialized views with user-defined aggregates
    3.
    发明申请
    Materialized views with user-defined aggregates 有权
    具有用户定义聚合的物化视图

    公开(公告)号:US20090019005A1

    公开(公告)日:2009-01-15

    申请号:US11827796

    申请日:2007-07-13

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30457

    摘要: Systems, methodologies, media, and other embodiments associated with supporting materialized views with user-defined aggregates are described. One example system includes logic for exposing a set of interface actions to support a user-defined aggregate in a materialized view associated with a base table. The materialized view may store both the user-defined aggregate and a user-defined aggregate context that facilitates logically connecting the user-defined aggregate to the base table. The example system may also include logic for supporting the user-defined aggregate. The support may be based on the set of interface actions. Example systems and methods may, therefore, facilitate incremental updating of the materialized view and/or rewriting a query to access the materialized view.

    摘要翻译: 描述了使用用户定义的聚合来支持物化视图的系统,方法,介质和其他实施例。 一个示例系统包括用于在与基表相关联的物化视图中暴露一组接口动作以支持用户定义的聚合的逻辑。 物化视图可以存储用户定义的聚合和有助于将用户定义的聚合逻辑连接到基表的用户定义的聚合上下文。 示例系统还可以包括用于支持用户定义的聚合的逻辑。 支持可以基于一组接口动作。 因此,示例系统和方法可以促进物化视图的增量更新和/或重写查询以访问物化视图。

    Queries with hard time constraints
    4.
    发明申请
    Queries with hard time constraints 有权
    具有困难时间限制的查询

    公开(公告)号:US20080288473A1

    公开(公告)日:2008-11-20

    申请号:US11804508

    申请日:2007-05-18

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30522 G06F17/30533

    摘要: Systems, methodologies, media, and other embodiments associated with supporting queries with hard time constraints are described. One exemplary system embodiment includes logic for accepting a query having a hard time constraint. The example system may also include logic for selectively rewriting the query having the hard time constraint into a query having a row limitation or a sample percentage limitation. In one example, the row limitation or sample percentage limitation are computed by repetitively comparing an estimated query execution time to the hard time constraint. The example system may also include logic for establishing a timer(s) associated with the rewritten query.

    摘要翻译: 描述了与支持具有硬时间约束的查询相关联的系统,方法,媒体和其他实施例。 一个示例性系统实施例包括用于接受具有硬时间约束的查询的逻辑。 示例系统还可以包括用于选择性地将具有硬时间约束的查询重写到具有行限制或样本百分比限制的查询中的逻辑。 在一个示例中,通过将估计的查询执行时间与硬时间约束重复比较来计算行限制或抽样百分比限制。 示例系统还可以包括用于建立与重写查询相关联的定时器的逻辑。

    Queries with soft time constraints
    6.
    发明授权
    Queries with soft time constraints 有权
    具有软时间限制的查询

    公开(公告)号:US07953728B2

    公开(公告)日:2011-05-31

    申请号:US11804502

    申请日:2007-05-18

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30536

    摘要: Systems, methodologies, media, and other embodiments associated with supporting queries with soft time constraints are described. One exemplary system embodiment includes logic for accepting a query having a soft time constraint. The example system may also include logic for rewriting the query having the soft time constraint into a query having a row limitation or a sample percentage limitation. In one example, the row limitation or sample percentage limitation are computed by repetitively comparing an estimated query execution time to the soft time constraint.

    摘要翻译: 描述了与支持具有软时间约束的查询相关联的系统,方法,媒体和其他实施例。 一个示例性系统实施例包括用于接受具有软时间约束的查询的逻辑。 示例系统还可以包括用于将具有软时间约束的查询重写为具有行限制或样本百分比限制的查询的逻辑。 在一个示例中,通过将估计的查询执行时间与软时间约束重复比较来计算行限制或样本百分比限制。

    Materialized views with user-defined aggregates
    7.
    发明授权
    Materialized views with user-defined aggregates 有权
    具有用户定义聚合的物化视图

    公开(公告)号:US07844600B2

    公开(公告)日:2010-11-30

    申请号:US11827796

    申请日:2007-07-13

    IPC分类号: G06F7/00 G06F17/30

    CPC分类号: G06F17/30457

    摘要: Systems, methodologies, media, and other embodiments associated with supporting materialized views with user-defined aggregates are described. One example system includes logic for exposing a set of interface actions to support a user-defined aggregate in a materialized view associated with a base table. The materialized view may store both the user-defined aggregate and a user-defined aggregate context that facilitates logically connecting the user-defined aggregate to the base table. The example system may also include logic for supporting the user-defined aggregate. The support may be based on the set of interface actions. Example systems and methods may, therefore, facilitate incremental updating of the materialized view and/or rewriting a query to access the materialized view.

    摘要翻译: 描述了使用用户定义的聚合来支持物化视图的系统,方法,介质和其他实施例。 一个示例系统包括用于在与基表相关联的物化视图中暴露一组接口动作以支持用户定义的聚合的逻辑。 物化视图可以存储用户定义的聚合和有助于将用户定义的聚合逻辑连接到基表的用户定义的聚合上下文。 示例系统还可以包括用于支持用户定义的聚合的逻辑。 支持可以基于一组接口动作。 因此,示例系统和方法可以促进物化视图的增量更新和/或重写查询以访问物化视图。

    Indexes that are based on bitmap values and that use summary bitmap values
    8.
    发明授权
    Indexes that are based on bitmap values and that use summary bitmap values 有权
    基于位图值的索引,并使用汇总位图值

    公开(公告)号:US07774346B2

    公开(公告)日:2010-08-10

    申请号:US11215639

    申请日:2005-08-29

    IPC分类号: G06F7/00

    CPC分类号: G06F17/30324

    摘要: A database management system that has bitmap values in which set bits in a representation of a bitstring specify a set of objects whose definitions are built into the database management system. The database management system further includes user-accessible operations on the bitmap values. The bitmap values are represented by means of a mapping specifier that specifies a range of the set of objects and a representation of a string of bits that has been mapped onto the set of object specified by the range specifier. Objects containing bitmap values may be indexed by means of an index tree that includes summary bitmap values.

    摘要翻译: 具有位图值的数据库管理系统,其中位列表示中的设置位指定其定义被内置到数据库管理系统中的一组对象。 数据库管理系统还包括对位图值的用户可访问操作。 位图值通过指定对象集合的范围的映射说明符和已经映射到范围说明符指定的对象集合的位串的表示来表示。 包含位图值的对象可以通过包含摘要位图值的索引树进行索引。

    Queries with soft time constraints
    9.
    发明申请
    Queries with soft time constraints 有权
    具有软时间限制的查询

    公开(公告)号:US20080288446A1

    公开(公告)日:2008-11-20

    申请号:US11804502

    申请日:2007-05-18

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30536

    摘要: Systems, methodologies, media, and other embodiments associated with supporting queries with soft time constraints are described. One exemplary system embodiment includes logic for accepting a query having a soft time constraint. The example system may also include logic for rewriting the query having the soft time constraint into a query having a row limitation or a sample percentage limitation. In one example, the row limitation or sample percentage limitation are computed by repetitively comparing an estimated query execution time to the soft time constraint.

    摘要翻译: 描述了与支持具有软时间约束的查询相关联的系统,方法,媒体和其他实施例。 一个示例性系统实施例包括用于接受具有软时间约束的查询的逻辑。 示例系统还可以包括用于将具有软时间约束的查询重写为具有行限制或样本百分比限制的查询的逻辑。 在一个示例中,通过将估计的查询执行时间与软时间约束重复比较来计算行限制或样本百分比限制。

    Database management system with persistent, user-accessible bitmap values
    10.
    发明申请
    Database management system with persistent, user-accessible bitmap values 审中-公开
    数据库管理系统具有持久的,用户可访问的位图值

    公开(公告)号:US20050216518A1

    公开(公告)日:2005-09-29

    申请号:US10810756

    申请日:2004-03-26

    IPC分类号: G06F17/30 G06F17/00

    CPC分类号: G06F16/2237

    摘要: A database management system that has bitmap values in which set bits in a representation of a bitstring specify a set of objects whose definitions are built into the database management system. The database management system further includes user-accessible operations on the bitmap values. The bitmap values are represented by means of a mapping specifier that specifies a range of the set of objects and a representation of a string of bits that has been mapped onto the set of object specified by the range specifier. The representation of the string of bits may be compressed. Bitmap operations on the values may alter the range specifier, the size of the string of bits, or individual bits in the string of bits. The objects represented by the bitmap values may be objects in the database management system or objects external thereto. An example of bitmap values of the first kind are bitmap values representing sets of rowids. rowid bitmap values may be used to make a user-defined index of attribute values for any set of objects contained in fields in the database management system. An example of bitmap values of the second kind are bitmap values representing sets of electronic product codes. ePC bitmap values may be used in any application where a compact representation of a set of ePC codes is desired.

    摘要翻译: 具有位图值的数据库管理系统,其中位列表示中的设置位指定其定义被内置到数据库管理系统中的一组对象。 数据库管理系统还包括对位图值的用户可访问操作。 位图值通过指定对象集合的范围的映射说明符和已经映射到范围说明符指定的对象集合的位串的表示来表示。 可以压缩比特串的表示。 对值的位图操作可以改变范围说明符,位串的大小或位串中的各个位。 由位图值表示的对象可以是数据库管理系统中的对象或其外部的对象。 第一类位图值的一个例子是表示一组rowid的位图值。 rowid位图值可用于为数据库管理系统中的字段中包含的任何对象集合创建用户定义的属性值索引。 第二种位图值的一个例子是表示电子产品代码集的位图值。 ePC位图值可以用于需要一组ePC代码的紧凑表示的任何应用中。