Database management system with efficient version control
    1.
    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:US07243088B2

    公开(公告)日:2007-07-10

    申请号:US10636361

    申请日:2003-08-06

    IPC分类号: G06F11/00 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。

    Database management system with efficient version control
    2.
    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。