发明名称 |
PROGRAM FOR CAPTURING DATA CHANGES UTILIZING DATA-SPACE TRACKING |
摘要 |
A program for reorganizing information in a computer system while concurrently providing access to the information for updates. In an exemplary embodiment of the invention, an on-line reorganization facility (ORF) uses index data-spaces that point to other data-spaces, referred to as data data-spaces, to efficiently track and coordinate information about the data-elements in an original data-space operated upon by a reorganization process. A relative base address of a data-element in an index data-space can be derived from a relative base address of a data-element in an original data-space, and vice versa. An index data-space data-element contains a location of a data-element in a data data-space that tracks change information related to a corresponding data-element in the original data-space. Tracked changes are later applied to the newly reorganized data-space to assure consistency and integrity of the data. Tracked changes include the location in the original data-space where the change occurred and a flag indicting the type of change.
|
申请公布号 |
US2009063553(A1) |
申请公布日期 |
2009.03.05 |
申请号 |
US20080260565 |
申请日期 |
2008.10.29 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BEIER HARLEY A.;WATTS VERN L. |
分类号 |
G06F12/16;G06F7/00;G06F17/30 |
主分类号 |
G06F12/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|