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    Compression of sorted value indexes using common prefixes
    1.
    发明授权
    Compression of sorted value indexes using common prefixes 有权
    使用公共前缀压缩排序值索引

    公开(公告)号：US08255398B2

    公开(公告)日：2012-08-28

    申请号：US12241458

    申请日：2008-09-30

    申请人： Bishwaranjan Bhattacharjee ,  Sherman Lau ,  Lipyeow Lim ,  Timothy R. Malkemus ,  Cathy McArthur ,  George A. Mihaila ,  Reza Sherkat ,  Zoltan G. Toth

    发明人： Bishwaranjan Bhattacharjee ,  Sherman Lau ,  Lipyeow Lim ,  Timothy R. Malkemus ,  Cathy McArthur ,  George A. Mihaila ,  Reza Sherkat ,  Zoltan G. Toth

    IPC分类号： G06F7/00 ,  G06F17/30

    CPC分类号： G06F17/30631 ,  H03M7/30

    摘要： A method, information processing system, and computer program storage product to compress sorted values. At least a first prefix and a second prefix in a plurality of prefixes are compared. Each prefix comprises at least a portion of a plurality of sorted values. A respective prefix comprises a set of consecutive characters including at least a first character of a respective sorted value. The respective sorted value further comprising a respective suffix comprising consecutive characters of the respective sorted value that are after the respective prefix. At least a respective first character of the first prefix and a respective first character of the second prefix are determined to be substantially identical. The first prefix is merged with the second prefix into a single prefix comprising the first character. A set of suffixes associated with the first prefix is updated to reflect an association with the second prefix.

    摘要翻译： 一种方法，信息处理系统和计算机程序存储产品来压缩排序值。 比较多个前缀中的至少第一前缀和第二前缀。 每个前缀包括多个排序值的至少一部分。 相应的前缀包括一组包括相应排序值的至少第一个字符的连续字符。 相应的排序值还包括相应的后缀，该后缀包括在相应前缀之后的相应排序值的连续字符。 至少第一前缀的相应第一字符和第二前缀的相应第一个字符被确定为基本相同。 第一前缀与第二前缀合并成包括第一个字符的单个前缀。 与第一前缀相关联的一组后缀被更新以反映与第二前缀的关联。

    COMPRESSION OF SORTED VALUE INDEXES USING COMMON PREFIXES
    2.
    发明申请
    COMPRESSION OF SORTED VALUE INDEXES USING COMMON PREFIXES 有权
    使用共同条款压缩价值指数

    公开(公告)号：US20100082545A1

    公开(公告)日：2010-04-01

    申请号：US12241458

    申请日：2008-09-30

    申请人： BISHWARANJAN BHATTACHARJEE ,  Sherman Lau ,  Lipyeow Lim ,  Timothy R. Malkemus ,  Cathy Mcarthur ,  George A. Mihaila ,  Reza Sherkat ,  Zoltan G. Toth

    发明人： BISHWARANJAN BHATTACHARJEE ,  Sherman Lau ,  Lipyeow Lim ,  Timothy R. Malkemus ,  Cathy Mcarthur ,  George A. Mihaila ,  Reza Sherkat ,  Zoltan G. Toth

    IPC分类号： G06F7/00

    CPC分类号： G06F17/30631 ,  H03M7/30

    摘要： A method, information processing system, and computer program storage product for compressing sorted values is disclosed. At least a first prefix and a second prefix in a plurality of prefixes are compared. Each prefix comprises at least a portion of a plurality of sorted values. A respective prefix comprises a set of consecutive characters including at least a first character of a respective sorted value. The respective sorted value further comprising a respective suffix comprising consecutive characters of the respective sorted value that are after the respective prefix. At least a respective first character of the first prefix and a respective first character of the second prefix are determined to be substantially identical. The first prefix is merged with the second prefix into a single prefix comprising the first character. A set of suffixes associated with the first prefix is updated to reflect an association with the second prefix.

    摘要翻译： 公开了一种用于压缩排序值的方法，信息处理系统和计算机程序存储产品。 比较多个前缀中的至少第一前缀和第二前缀。 每个前缀包括多个排序值的至少一部分。 相应的前缀包括一组包括相应排序值的至少第一个字符的连续字符。 相应的排序值还包括相应的后缀，该后缀包括在相应前缀之后的相应排序值的连续字符。 至少第一前缀的相应第一字符和第二前缀的相应第一个字符被确定为基本相同。 第一前缀与第二前缀合并成包括第一个字符的单个前缀。 与第一前缀相关联的一组后缀被更新以反映与第二前缀的关联。

    System and method for a multi-level locking hierarchy in a database with multi-dimensional clustering
    3.
    发明授权
    System and method for a multi-level locking hierarchy in a database with multi-dimensional clustering 失效
    具有多维聚类的数据库中多级锁定层次结构的系统和方法

    公开(公告)号：US07236974B2

    公开(公告)日：2007-06-26

    申请号：US10425760

    申请日：2003-04-29

    申请人： Bishwaranjan Bhattacharjee ,  Leslie A. Cranston ,  Matthew A. Huras ,  Timothy R. Malkemus ,  Catherine S. McArthur ,  Sriram K. Padmanabhan ,  Michael J. Winer

    发明人： Bishwaranjan Bhattacharjee ,  Leslie A. Cranston ,  Matthew A. Huras ,  Timothy R. Malkemus ,  Catherine S. McArthur ,  Sriram K. Padmanabhan ,  Michael J. Winer

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30592 ,  G06F17/30362 ,  Y10S707/99932 ,  Y10S707/99938 ,  Y10S707/99939

    摘要： A multi-level locking hierarchy for a relational database includes a locking level applied to a multi-dimensionally clustering table, a locking level applied to blocks within the table, and a locking level applied to rows within the blocks. The hierarchy leverages the multi-dimensional clustering of the table data for efficiency and to reduce lock overhead. Data is normally locked in order of coarser to finer granularity to limit deadlock. When data of finer granularity is locked, data of coarser granularity containing the finer granularity data is also locked. Block lock durations may be employed to ensure that a block remains locked if any contained row remains locked. Block level lock attributes may facilitate detection of at least one of a concurrent scan and a row deletion within a block. Detection of the emptying of a block during a scan of the block may bar scan completion in that block.

    摘要翻译： 关系数据库的多级锁定层次结构包括应用于多维聚类表的锁定级别，应用于表中块的锁定级别以及应用于块内的行的锁定级别。 层次结构利用表数据的多维聚类来提高效率并减少锁定开销。 数据通常以更细和更细粒度的顺序锁定，以限制死锁。 当更细粒度的数据被锁定时，包含更细粒度数据的较粗粒度的数据也被锁定。 可以使用块锁定持续时间来确保如果任何包含的行保持锁定，则块保持锁定。 块级锁定属性可以有助于检测块内的并行扫描和行删除中的至少一个。 在块的扫描期间检测块的排空可能会阻止该块中的扫描完成。

    Increasing buffer locality during multiple table access operations
    5.
    发明授权
    Increasing buffer locality during multiple table access operations 失效
    在多个表访问操作期间增加缓冲区的位置

    公开(公告)号：US08010766B2

    公开(公告)日：2011-08-30

    申请号：US11548875

    申请日：2006-10-12

    申请人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus ,  Sriram Padmanabhan ,  Kwai Wong

    发明人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus ,  Sriram Padmanabhan ,  Kwai Wong

    IPC分类号： G06F13/00

    CPC分类号： G06F17/30952 ,  G06F17/3048 ,  G06F17/30985

    摘要： Disclosed are a method, information processing system, and computer readable medium for managing table scan processes. The method includes monitoring a plurality of storage medium table scan processes. Each storage medium table scan process in the plurality of storage medium table scan processes is placed into a plurality of scan groups based on storage medium pages to be scanned by each of the storage medium table scan processes. Each storage medium table scan process in a scan group can share data within a storage medium page.

    摘要翻译： 公开了一种用于管理表扫描处理的方法，信息处理系统和计算机可读介质。 该方法包括监视多个存储介质表扫描处理。 将多个存储介质台扫描处理中的每个存储介质台扫描处理基于要通过每个存储介质表扫描处理扫描的存储介质页被放置到多个扫描组中。 扫描组中的每个存储介质表扫描处理可以在存储介质页内共享数据。

    SYSTEM AND METHOD FOR EXECUTNG MULTIPLE CONCURRENT INDEX-DRIVEN TABLE ACCESS OPERATIONS
    6.
    发明申请
    SYSTEM AND METHOD FOR EXECUTNG MULTIPLE CONCURRENT INDEX-DRIVEN TABLE ACCESS OPERATIONS 失效
    用于多项式多目标指数驱动表访问操作的系统和方法

    公开(公告)号：US20090083212A1

    公开(公告)日：2009-03-26

    申请号：US11859405

    申请日：2007-09-21

    申请人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus

    发明人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30336 ,  G06F17/30595

    摘要： An index scan processor and method to perform concurrent scans of stored indexed data. An indexed data scanner performs a first scan of stored data by sequentially scanning through an index data structure and maintains, over a duration of the first scan, a first scan current scan location within the index data structure that indicates a currently accessed record within the stored data structure for the first scan. A scan manager accepts a request for a second scan of the stored data, determines, during the performing the first scan, a starting index scan location within the index data structure for the second scan that is sufficiently near the first scan current index scan location to cause records indicated by the starting location index to be stored within a buffer due to the performing the first scan, and starts the second scan at the starting location and proceeding to the second end key.

    摘要翻译： 索引扫描处理器和方法，用于执行存储的索引数据的并发扫描。 索引数据扫描器通过依次扫描索引数据结构来对存储的数据进行第一次扫描，并且在第一次扫描的持续时间内维持索引数据结构内的第一扫描当前扫描位置，其指示所存储的当前访问的记录 第一次扫描的数据结构。 扫描管理器接受对所存储的数据进行第二次扫描的请求，在执行第一次扫描期间确定第二次扫描的索引数据结构内的起始索引扫描位置，其足够靠近第一扫描当前索引扫描位置到 由起始位置索引指示的记录由于执行第一次扫描而被存储在缓冲器内，并且在起始位置开始第二次扫描，并进行到第二个结束键。

    Speed selective table scan operation
    7.
    发明授权
    Speed selective table scan operation 失效
    速度选择表扫描操作

    公开(公告)号：US07937541B2

    公开(公告)日：2011-05-03

    申请号：US11548889

    申请日：2006-10-12

    申请人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus ,  Sriram Padmanabhan ,  Kwai Wong

    发明人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus ,  Sriram Padmanabhan ,  Kwai Wong

    IPC分类号： G06F12/06

    CPC分类号： G06F12/0866 ,  G06F12/123 ,  G06F17/30448

    摘要： Disclosed are a method, information processing system, and computer readable medium for scanning a storage medium table. The method includes retrieving location information associated with at least one other storage medium table scan. A storage medium table scan is started at a location within a storage medium table based on at least a location of the one other storage medium table scan. A weight is assigned to at least one storage medium block based on at least a current scanning location within the storage medium table relative to the location of the one other table scan. The method determines if a distance between the current scanning location and the location of the one other table scan is greater than a first given threshold. A current scanning operation is delayed, in response to the distance being greater than the given threshold, until the distance is below a second given threshold.

    摘要翻译： 公开了一种用于扫描存储介质表的方法，信息处理系统和计算机可读介质。 该方法包括检索与至少一个其他存储介质表扫描相关联的位置信息。 基于至少另一个存储介质表扫描的位置，在存储介质表中的位置处开始存储介质表扫描。 基于至少一个存储介质表中的当前扫描位置相对于另一个表扫描的位置，将权重分配给至少一个存储介质块。 该方法确定当前扫描位置与另一个表扫描的位置之间的距离是否大于第一给定阈值。 响应于距离大于给定阈值，当前扫描操作被延迟，直到距离低于第二给定阈值。

    System and method for estimating distances between multiple index-driven scan operations
    8.
    发明授权
    System and method for estimating distances between multiple index-driven scan operations 有权
    用于估计多个索引驱动扫描操作之间的距离的系统和方法

    公开(公告)号：US07836036B2

    公开(公告)日：2010-11-16

    申请号：US11859384

    申请日：2007-09-21

    申请人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus

    发明人： Bishwaranjan Bhattacharjee ,  Christian A. Lang ,  Timothy R. Malkemus

    IPC分类号： G06F7/00

    CPC分类号： G06F17/30492 ,  G06F17/30595

    摘要： A method and processor to determine distances between multiple index driven scan operations. A first anchor index entry is identified during a first index scan and stored. A first number of index entries between the first anchor index entry and a first index scan location being processed by a first index scan is determined based on information maintained external to an index structure. A determination is made of second number of index entries between the first anchor index entry and a second index scan location being processed by a second index scan executing concurrently with the first index scan based on information maintained external to the index structure. A distance between the first index scan location and the second index scan location is calculated as equal to a difference between the first number of index entries and the second number of index entries.

    摘要翻译： 一种确定多个索引驱动扫描操作之间的距离的方法和处理器。 在第一索引扫描期间识别第一锚索引条目并存储。 基于在索引结构外部维护的信息来确定第一索引条目和由第一索引扫描处理的第一索引扫描位置之间的索引条目的第一数目。 确定第一锚定索引条目和第二索引扫描位置之间的索引条目的第二数量，该第二索引扫描位置是通过基于在索引结构外部维护的信息与第一索引扫描同时执行的第二索引扫描来处理的。 计算第一索引扫描位置和第二索引扫描位置之间的距离等于第一索引条目数和第二索引条目数之间的差。

    System and method for space management of multidimensionally clustered tables
    9.
    发明授权
    System and method for space management of multidimensionally clustered tables 失效
    多维集群表的空间管理系统和方法

    公开(公告)号：US07765211B2

    公开(公告)日：2010-07-27

    申请号：US10425781

    申请日：2003-04-29

    申请人： Bishwaranjan Bhattacharjee ,  Leslie A. Cranston ,  Matthew A. Huras ,  Bruce G. Lindsay ,  Timothy R. Malkemus ,  Catherine S. McArthur ,  Sriram K. Padmanabhan ,  Michael J. Winer

    发明人： Bishwaranjan Bhattacharjee ,  Leslie A. Cranston ,  Matthew A. Huras ,  Bruce G. Lindsay ,  Timothy R. Malkemus ,  Catherine S. McArthur ,  Sriram K. Padmanabhan ,  Michael J. Winer

    IPC分类号： G06F7/00 ,  G06F17/30

    CPC分类号： G06F17/30592

    摘要： An information retrieval system and method are provided for minimizing the number of blocks searched in a cell before recording a new record in the table and determining which block can be assigned if a table has space available to store a new record in the case an additional block should be associated with a cell. Dimensions for a table are identified, and at least one block in the table is associated with a dimension value for each dimension, where each block comprises contiguous storage pages. The block can be further associated with a cell; this associated cell has a unique combination of dimension values comprising an dimension value for each of the dimensions. A unique associated bit list for each dimension value for each dimension has a unique corresponding list entry for each block associated with that dimension value, and a unique associated bit list for each cell has a unique corresponding list entry for each block associated with that cell.

    摘要翻译： 提供了一种信息检索系统和方法，用于在记录表中的新记录之前最小化在小区中搜索的块的数量，并且如果在具有可用于存储新记录的空间的情况下确定可以分配哪个块的附加块 应该与一个单元格相关联。 识别表的尺寸，并且表中的至少一个块与每个维的维度值相关联，其中每个块包括连续的存储页。 该块可以进一步与细胞相关联; 该相关联的单元格具有维度值的唯一组合，其包括每个维度的维度值。 每个维度的每个维度值的唯一关联位列具有与该维度值相关联的每个块的唯一对应列表条目，并且每个单元的唯一关联位列表具有与该单元相关联的每个块的唯一对应列表条目。

    SYSTEM AND METHOD FOR ESTIMATING DISTANCES BETWEEN MULTIPLE INDEX-DRIVEN SCAN OPERATIONS
    10.
    发明申请
    SYSTEM AND METHOD FOR ESTIMATING DISTANCES BETWEEN MULTIPLE INDEX-DRIVEN SCAN OPERATIONS 有权
    用于估计多个指数驱动扫描操作之间的距离的系统和方法

    公开(公告)号：US20090083292A1

    公开(公告)日：2009-03-26

    申请号：US11859384

    申请日：2007-09-21

    申请人： BISHWARANJAN BHATTACHARJEE ,  Christian A. Lang ,  Timothy R. Malkemus

    发明人： BISHWARANJAN BHATTACHARJEE ,  Christian A. Lang ,  Timothy R. Malkemus

    IPC分类号： G06F17/30 ,  G06F7/00 ,  G06F17/00

    CPC分类号： G06F17/30492 ,  G06F17/30595

    摘要： A method and processor to determine distances between multiple index driven scan operations. A first anchor index entry is identified during a first index scan and stored. A first number of index entries between the first anchor index entry and a first index scan location being processed by a first index scan is determined based on information maintained external to an index structure. A determination is made of second number of index entries between the first anchor index entry and a second index scan location being processed by a second index scan executing concurrently with the first index scan based on information maintained external to the index structure. A distance between the first index scan location and the second index scan location is calculated as equal to a difference between the first number of index entries and the second number of index entries.

    摘要翻译： 一种确定多个索引驱动扫描操作之间的距离的方法和处理器。 在第一索引扫描期间识别第一锚索引条目并存储。 基于在索引结构外部维护的信息来确定第一索引条目和由第一索引扫描处理的第一索引扫描位置之间的索引条目的第一数目。 确定第一锚定索引条目和第二索引扫描位置之间的索引条目的第二数量，该第二索引扫描位置是通过基于在索引结构外部维护的信息与第一索引扫描同时执行的第二索引扫描来处理的。 计算第一索引扫描位置和第二索引扫描位置之间的距离等于第一索引条目数和第二索引条目数之间的差。