Backward compatibility in database schemas

Details Backward compatibility in database schemas Backward compatibility in database schemas

2005-03-08

2010-11-30

LeRoux, Etienne P (Department: 2161)

Data processing: database and file management or data structures

Database design

Database and data structure management

C711S162000

Reexamination Certificate

active

07844639

ABSTRACT:
A method of accommodating at least one difference between a first database schema and a second database schema is provided. The method includes receiving a request from a first application program that is operationally dependent upon the first database schema, the request being received at a second application program that is operationally dependent upon the second database schema. Thereafter, the method identifies if there is a difference between the first database schema and the second database schema. When there is a difference, the method identifies the difference between the first database schema and the second database schema to identify at least one different schema definition element and associates the different schema definition element with a reserved element. The reserved element may have a corresponding reserved element provided in the first database schema. A response is then communicated to the first application program including the reserved element.

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