Fact table storage in a decision support system environment
    1.
    发明授权
    Fact table storage in a decision support system environment 有权
    事实表存储在决策支持系统环境中

    公开(公告)号:US07480662B2

    公开(公告)日:2009-01-20

    申请号:US10719819

    申请日:2003-11-20

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

    摘要: A fact table is set up without any dimension columns. The data in the table is ordered according to an order corresponding to the ordering of the dimensions. The table is divided into segments corresponding to contiguous portions of data. The portions of the table containing non-null values for the measures are placed into the segments. The size of the segments and the location segments may be determined according to the density of discontinuities in the data. An indexed organized table is used to determine the beginning and end of each segment of the table, the locations of the discontinuities in the data, and to facilitate accessing the measures of the table.

    摘要翻译: 事实表设置没有任何维度列。 表中的数据按照与尺寸顺序对应的顺序进行排序。 该表被分成对应于数据的连续部分的段。 包含度量值的非空值的表的部分被放入段中。 可以根据数据中的不连续密度来确定段和位置段的大小。 索引的有组织的表用于确定表的每个段的开始和结束,数据中的不连续性的位置,以及便于访问表的度量。

    Fact table storage in a decision support system environment
    2.
    发明申请
    Fact table storage in a decision support system environment 有权
    事实表存储在决策支持系统环境中

    公开(公告)号:US20050004936A1

    公开(公告)日:2005-01-06

    申请号:US10719819

    申请日:2003-11-20

    IPC分类号: G06F17/00 G06F17/30

    摘要: A fact table is set up without any dimension columns. The data in the table is ordered according to an order corresponding to the ordering of the dimensions. The table is divided into segments corresponding to contiguous portions of data. The portions of the table containing non-null values for the measures are placed into the segments. The size of the segments and the location segments may be determined according to the density of discontinuities in the data. An indexed organized table is used to determine the beginning and end of each segment of the table, the locations of the discontinuities in the data, and to facilitate accessing the measures of the table.

    摘要翻译: 事实表设置没有任何维度列。 表中的数据按照与尺寸顺序相对应的顺序进行排序。 该表被分成对应于数据的连续部分的段。 包含度量值的非空值的表的部分被放入段中。 可以根据数据中的不连续密度来确定段和位置段的大小。 索引的有组织的表用于确定表的每个段的开始和结束,数据中的不连续性的位置,以及便于访问表的度量。

    Dynamic disk space management by multiple database server instances in a cluster configuration
    7.
    发明授权
    Dynamic disk space management by multiple database server instances in a cluster configuration 有权
    群集配置中多个数据库服务器实例的动态磁盘空间管理

    公开(公告)号:US07249152B2

    公开(公告)日:2007-07-24

    申请号:US10435282

    申请日:2003-05-08

    IPC分类号: G06F12/00

    摘要: A method and apparatus for the dynamic management of disk space by multiple database server instances in a cluster configuration is disclosed. A segment is partitioned. Each partition is associated with a bitmap block. A partition's bitmap block indicates the freeness of the partition's data blocks. A partition's bitmap block may be owned by one server instance at a time. After determining from a partition's bitmap block where free disk space is located within the partition, the partition's bitmap block's owner may allocate the free disk space for the owner's use. A bitmap block may become owned by different server instances at different times. When a server instance ceases to actively use its bitmap block, another server instance may “steal” the bitmap block. Thus, multiple server instances may allocate disk space in the same partition over time, preventing disk space waste.

    摘要翻译: 公开了一种用于在集群配置中由多个数据库服务器实例动态管理磁盘空间的方法和装置。 分段。 每个分区与位图块相关联。 分区的位图块表示分区的数据块的游离度。 分区的位图块可能一次由一个服务器实例拥有。 在从分区的可用磁盘空间位于分区的位图块确定之后,分区的位图块的所有者可以为所有者使用分配可用磁盘空间。 位图块可能会在不同时间由不同的服务器实例拥有。 当服务器实例停止主动使用其位图块时,另一个服务器实例可能会“窃取”位图块。 因此,多个服务器实例可能会随着时间在同一分区中分配磁盘空间,从而防止磁盘空间浪费。