Mechanism for facilitating backtracking

Details Mechanism for facilitating backtracking Mechanism for facilitating backtracking

2005-08-09

2005-08-09

Le, Uyen (Department: 2163)

Data processing: database and file management or data structures

Database design

Data structure types

C715S252000, C717S131000

Reexamination Certificate

active

06928449

ABSTRACT:
In processing a source entity with a transformation entity, an action set forth in a portion of the transformation entity is executed. A portion of the source entity is the subject of this action. This action causes a particular portion of a result entity to be generated. After this portion of the result entity is generated, a set of history information is associated therewith, which comprises a reference to the portion of the transformation entity that gave rise to the action, and a reference to the portion of the source entity that was the subject of the action. Given this information, it is possible to perform backtracking at a later time, so that when this particular portion of the result entity is selected, those portions of the transformation and source entities that gave rise to the particular portion of the result entity can be indicated to a user.

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