DELTA OPERATIONS ON A LARGE OBJECT IN A DATABASE
    1.
    发明申请
    DELTA OPERATIONS ON A LARGE OBJECT IN A DATABASE 审中-公开
    DELTA在一个大型的对象数据库中的操作

    公开(公告)号:WO2009015049A2

    公开(公告)日:2009-01-29

    申请号:PCT/US2008/070564

    申请日:2008-07-19

    CPC classification number: G06F17/30421 G06F17/30365

    Abstract: A computer (200) modifies data inside an object (201 ) in a database (210) without modifying other data in the remainder of the object (201 ). Insertion of new data (208C) at a specified location in the object (201 ) does not require movement of existing data in the object (201 ). Instead, the computer (200) is programmed to insert new data at a physical end of the object (201 ), and modify metadata (230) based on the specified location. Similarly, deletion of existing data from a specified location in the object (201 ) is performed without movement of other data in the object (201 ), by updating the metadata (230). The computer (200) uses the metadata (230) when reading from the object (201 ), so that the new data (208C) is automatically read whenever the specified location is accessed. The computer (200) may optionally output a handle that is static, relative to other insertions and deletions, to identify specific data within the object (201 ), for use in building indexes on the object (201 ).

    Abstract translation: 计算机(200)修改数据库(210)中的对象(201)内的数据而不修改对象(201)的其余部分中的其他数据。 在对象(201)的指定位置插入新数据(208C)不需要移动对象(201)中的现有数据。 相反,计算机(200)被编程为在对象(201)的物理端插入新数据,并基于指定位置修改元数据(230)。 类似地,通过更新元数据(230),执行从对象(201)中的指定位置删除现有数据而不移动对象(201)中的其他数据。 当从对象(201)读取时,计算机(200)使用元数据(230),使得每当访问指定位置时自动读取新数据(208C)。 计算机(200)可以可选地输出相对于其他插入和删除是静态的句柄,以识别对象(201)内的特定数据,用于在对象(201)上构建索引。

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