Patent ID: 6470343
Filing Date: 2002-10-22
Classification: G06F,Y10S

Abstract:
In a database management system (â€œDBMSâ€ ) that stores information in a core data model having one or more core entities, each core entity including one or more core attributes, a method for making a customized extension to the core data model that allows modification of the one or more core entities without requiring changes to the customized extension, the method comprising:providing a generic structure which is adapted to define the customized extension to the core data model; said generic structure being a part of the core data model; configuring the core data model so that said customized extension is not affected when the one or more core entities are changed; storing, in the generic structure, information associating at least one new attribute with an existing core entity of the core data model; and storing, in the generic structure, values for the at least one new attribute of the core entity; thereby extending the core data model in a manner that allows the one or more core entities to be modified without affecting the customized extension to the core data model.