Method and system for quantifying a data page repetition pattern for a database index in a database management system
    1.
    发明授权
    Method and system for quantifying a data page repetition pattern for a database index in a database management system 有权
    用于量化数据库管理系统中数据库索引的数据页重复模式的方法和系统

    公开(公告)号:US07921085B2

    公开(公告)日:2011-04-05

    申请号:US11691309

    申请日:2007-03-26

    IPC分类号: G06F7/00 G06F17/00

    CPC分类号: G06F17/30306 G06F17/30536

    摘要: A method and system are presented for quantifying a data page repetition pattern for a database index in a database management system. In one embodiment, the method includes identifying a database index to provide a basis for collecting a data page repetition statistic, the database index having a database index key. The method may also include collecting the data page repetition statistic based on the database index key, wherein the data page repetition statistic quantifies a data page repetition pattern associated with database queries that reference sequential entries of the database index. The method may further include optimizing a data page access process based on the data page repetition statistic. In a further embodiment, the method may utilize both cluster ratio and data page repetition statistics to evaluate data page I/O and CPU cost.

    摘要翻译: 提出了一种用于量化数据库管理系统中数据库索引的数据页重复模式的方法和系统。 在一个实施例中,该方法包括标识数据库索引以提供收集数据页重复统计量的基础,数据库索引具有数据库索引关键字。 该方法还可以包括基于数据库索引关键字收集数据页重复统计量,其中数据页重复统计量量化与引用数据库索引的顺序条目的数据库查询相关联的数据页重复模式。 该方法还可以包括基于数据页重复统计量优化数据页访问过程。 在另一实施例中,该方法可以利用簇比和数据页重复统计来评估数据页I / O和CPU成本。

    METHOD AND SYSTEM FOR QUANTIFYING A DATA PAGE REPETITION PATTERN FOR A DATABASE INDEX IN A DATABASE MANAGEMENT SYSTEM
    2.
    发明申请
    METHOD AND SYSTEM FOR QUANTIFYING A DATA PAGE REPETITION PATTERN FOR A DATABASE INDEX IN A DATABASE MANAGEMENT SYSTEM 有权
    用于定量数据库管理系统中数据库索引的数据页重复模式的方法和系统

    公开(公告)号:US20080243761A1

    公开(公告)日:2008-10-02

    申请号:US11691309

    申请日:2007-03-26

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30306 G06F17/30536

    摘要: A method and system are presented for quantifying a data page repetition pattern for a database index in a database management system. In one embodiment, the method includes identifying a database index to provide a basis for collecting a data page repetition statistic, the database index having a database index key. The method may also include collecting the data page repetition statistic based on the database index key, wherein the data page repetition statistic quantifies a data page repetition pattern associated with database queries that reference sequential entries of the database index. The method may further include optimizing a data page access process based on the data page repetition statistic. In a further embodiment, the method may utilize both cluster ratio and data page repetition statistics to evaluate data page I/O and CPU cost.

    摘要翻译: 提出了一种用于量化数据库管理系统中数据库索引的数据页重复模式的方法和系统。 在一个实施例中,该方法包括标识数据库索引以提供收集数据页重复统计量的基础,数据库索引具有数据库索引关键字。 该方法还可以包括基于数据库索引关键字收集数据页重复统计量,其中数据页重复统计量量化与引用数据库索引的顺序条目的数据库查询相关联的数据页重复模式。 该方法还可以包括基于数据页重复统计量优化数据页访问过程。 在另一实施例中,该方法可以利用簇比和数据页重复统计来评估数据页I / O和CPU成本。

    Management of database statistics
    3.
    发明授权
    Management of database statistics 有权
    数据库统计管理

    公开(公告)号:US07814072B2

    公开(公告)日:2010-10-12

    申请号:US11028186

    申请日:2004-12-30

    IPC分类号: G06F17/00

    CPC分类号: G06F17/30315

    摘要: A method of, a computer program product for and a computer system for managing statistics in a database management system are provided. A value of a volatility of a statistic is determined. A value of a staleness of the statistic is determined using the value of the volatility. A statistics collection task is generated in response to, at least in part, the value of the staleness exceeding a value of a staleness threshold. The statistics collection task is executed to collect an additional value of the statistic. The additional value of the statistic is stored.

    摘要翻译: 提供了一种用于管理数据库管理系统中的统计的计算机程序产品和计算机系统的方法。 确定统计量的波动率的值。 使用波动率的值确定统计量的平均值。 响应于至少部分地响应于超过平常阈值的陈旧值的值来生成统计收集任务。 执行统计信息收集任务以收集统计信息的附加值。 存储统计信息的附加值。

    Query workload statistics collection in a database management system
    7.
    发明申请
    Query workload statistics collection in a database management system 有权
    在数据库管理系统中查询工作负载统计信息

    公开(公告)号:US20050234900A1

    公开(公告)日:2005-10-20

    申请号:US10824856

    申请日:2004-04-14

    IPC分类号: G06F17/30

    摘要: In various embodiments, a method, apparatus, and article of manufacture collect statistics in a database management system. A workload comprising a plurality of database queries is received. Query statistics for the database queries are identified. The query statistics for the database queries are consolidated to provide consolidated statistics. One or more statistics collection requests are generated based on the consolidated statistics.

    摘要翻译: 在各种实施例中,方法,装置和制品在数据库管理系统中收集统计数据。 接收包括多个数据库查询的工作负载。 识别数据库查询的查询统计信息。 合并数据库查询的查询统计信息以提供统一统计信息。 基于统一统计信息生成一个或多个统计信息收集请求。