DATABASE MANAGEMENT SYSTEM WITH EFFICIENT VERSION CONTROL
    1.
    发明申请
    DATABASE MANAGEMENT SYSTEM WITH EFFICIENT VERSION CONTROL 有权
    具有有效版本控制的数据库管理系统

    公开(公告)号:US20070233683A1

    公开(公告)日:2007-10-04

    申请号:US11757224

    申请日:2007-06-01

    IPC分类号: G06F17/30

    摘要: A two copy versioning scheme is proposed. The scheme provides efficient implementation for a high read load database and eliminates read dependencies. The versioning scheme provides efficient implementation for transactions executing under ANSI READ COMMITTED isolation, and is extensible to serializable isolation. The two-copy versioning scheme is garbage free meaning that all versions of data records are used during execution and is adapted to index scanning operations. A “deferred delete” scheme allows read transactions to complete data deallocation operations. Statements that require “snapshots” are efficiently supported.

    摘要翻译: 提出了一种双重版本控制方案。 该方案为高读取数据库提供了有效的实现,并消除了读取依赖关系。 版本控制方案为在ANSI READ COMMITTED隔离下执行的事务提供了有效的实现,并且可扩展到可序列化隔离。 双副本版本控制方案是无意义的,意味着在执行期间使用所有版本的数据记录,并适应于索引扫描操作。 “延迟删除”方案允许读取事务完成数据解除分配操作。 有效地支持需要“快照”的语句。

    Aggregate join index for relational databases
    3.
    发明授权
    Aggregate join index for relational databases 有权
    关系数据库的聚合连接索引

    公开(公告)号:US06505189B1

    公开(公告)日:2003-01-07

    申请号:US09594964

    申请日:2000-06-15

    IPC分类号: G06F1730

    摘要: The retrieval of data from a database in a computerized database management system is optimized through the use of an aggregate join index. The aggregate join index combines one or more commonly-used columns of the base tables with the results from one or more aggregation expressions pre-computed from one or more columns of the tables.

    摘要翻译: 通过使用聚合连接索引来优化从计算机化数据库管理系统中的数据库检索数据。 聚合连接索引将基本表的一个或多个常用列与从表的一个或多个列预先计算的一个或多个聚合表达式的结果组合。

    Operating logging for online recovery in shared memory information systems
    4.
    发明授权
    Operating logging for online recovery in shared memory information systems 有权
    在共享内存信息系统中进行在线恢复的操作日志记录

    公开(公告)号:US07739244B2

    公开(公告)日:2010-06-15

    申请号:US10966285

    申请日:2004-10-14

    IPC分类号: G06F17/30

    CPC分类号: G06F11/1438

    摘要: Clients are permitted to directly attach to a client server system. An oplog management system tracks changes as clients make the changes to control structures of the direct connection client server system. The Oplogging system stores changes in oplogs. Then, if a client fails, the Oplogging system can repair the control structures, either by undoing the changes made by the client, or else completing the changes in place of the client; depending upon principles defined.

    摘要翻译: 允许客户端直接连接到客户端服务器系统。 当客户端进行更改以控制直接连接客户端服务器系统的结构时,Oplog管理系统跟踪更改。 Oplogging系统存储oplogs中的更改。 然后,如果客户端失败,则Oplogging系统可以通过撤销客户端所做的更改来修复控制结构,也可以修改客户端的更改; 取决于所定义的原则。

    Database management system with efficient version control
    6.
    发明申请
    Database management system with efficient version control 有权
    数据库管理系统具有高效的版本控制

    公开(公告)号:US20050033720A1

    公开(公告)日:2005-02-10

    申请号:US10636361

    申请日:2003-08-06

    IPC分类号: G06F9/46 G06F17/30 G06F7/00

    摘要: A two copy versioning scheme is proposed. The scheme provides efficient implementation for a high read load database and eliminates read dependencies. The versioning scheme provides efficient implementation for transactions executing under ANSI READ COMMITTED isolation, and is extensible to serializable isolation. The two-copy versioning scheme is garbage free meaning that all versions of data records are used during execution and is adapted to index scanning operations. A “deferred delete” scheme allows read transactions to complete data deallocation operations. Statements that require “snapshots” are efficiently supported.

    摘要翻译: 提出了一种双重版本控制方案。 该方案为高读取数据库提供了有效的实现,并消除了读取依赖关系。 版本控制方案为在ANSI READ COMMITTED隔离下执行的事务提供了有效的实现,并且可扩展到可序列化隔离。 双副本版本控制方案是无意义的,意味着在执行期间使用所有版本的数据记录,并适应于索引扫描操作。 “延迟删除”方案允许读取事务完成数据解除分配操作。 有效地支持需要“快照”的语句。

    Virtual join index for relational databases
    7.
    发明授权
    Virtual join index for relational databases 有权
    关系数据库的虚拟连接索引

    公开(公告)号:US06505188B1

    公开(公告)日:2003-01-07

    申请号:US09594963

    申请日:2000-06-15

    IPC分类号: G06F1730

    摘要: The retrieval of data from a database in a computerized database management system is optimized through the use of a virtual join index and associated covering non-unique secondary indexes. The virtual join index is created by combining one or more commonly-used columns of one or more tables. The covering non-unique secondary indexes are generating by combining one or more commonly-used columns of the virtual join index. Data is not stored in the virtual join index after the covering non-unique secondary indexes are generated. Thereafter, some queries or portions thereof may be resolved solely by accessing one or more of the covering non-unique secondary indexes.

    摘要翻译: 通过使用虚拟连接索引和相关的覆盖非唯一次要索引来优化从计算机化数据库管理系统中的数据库检索数据。 通过组合一个或多个常用的一个或多个表的列来创建虚拟连接索引。 覆盖非唯一次要索引是通过组合虚拟连接索引的一个或多个常用列来生成的。 生成覆盖的非唯一次要索引后,数据不会存储在虚拟连接索引中。 此后,可以仅通过访问覆盖非唯一次要索引中的一个或多个来解决一些查询或其部分。

    Database management system with efficient version control
    10.
    发明授权
    Database management system with efficient version control 有权
    数据库管理系统具有高效的版本控制

    公开(公告)号:US08010497B2

    公开(公告)日:2011-08-30

    申请号:US11757224

    申请日:2007-06-01

    IPC分类号: G06F7/00

    摘要: A two copy versioning scheme is proposed. The scheme provides efficient implementation for a high read load database and eliminates read dependencies. The versioning scheme provides efficient implementation for transactions executing under ANSI READ COMMITTED isolation, and is extensible to serializable isolation. The two-copy versioning scheme is garbage free meaning that all versions of data records are used during execution and is adapted to index scanning operations. A “deferred delete” scheme allows read transactions to complete data deallocation operations. Statements that require “snapshots” are efficiently supported.

    摘要翻译: 提出了一种双重版本控制方案。 该方案为高读取数据库提供了有效的实现,并消除了读取依赖关系。 版本控制方案为在ANSI READ COMMITTED隔离下执行的事务提供了有效的实现,并且可扩展到可序列化隔离。 双副本版本控制方案是无意义的,意味着在执行期间使用所有版本的数据记录,并适应于索引扫描操作。 “延迟删除”方案允许读取事务完成数据解除分配操作。 有效地支持需要“快照”的语句。