Data processing: database and file management or data structures – Database design – Data structure types
Patent
1997-08-29
1999-10-26
Black, Thomas G.
Data processing: database and file management or data structures
Database design
Data structure types
707204, 707205, 345340, 345348, 714 38, G06F 1730
Patent
active
059744286
ABSTRACT:
According to a preferred embodiment of the present invention, a class versioning and mapping system allows a user to request a desired class without knowing which class version is the most recent or correct version for the desired class. The class versioning and mapping system uses a version mapping mechanism to cross reference the requested class, select the most recent or best version of the requested class, and then return an object to the user that belongs to the selected class. This feature allows the system to have multiple versions of the same class on-line at the same time and use objects from different versions of the same class in a way that is transparent to the user. Therefore, by using a preferred embodiment of the present invention, a client object can specify or request that an object be created without having any knowledge of the actual class version or version(s) that are available.
REFERENCES:
patent: 5404525 (1995-04-01), Endicott et al.
patent: 5784553 (1998-07-01), Kolawa et al.
patent: 5790855 (1998-08-01), Faustini
patent: 5815718 (1998-09-01), Tock
patent: 5842020 (1998-11-01), Faustini
Gerard Scott N.
Munroe Steven J.
Black Thomas G.
Havan Thu-Thao
International Business Machines - Corporation
Martin Derek P.
Pitts S. Jared
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