Legacy subclassing

Details Legacy subclassing Legacy subclassing

1997-08-15

1999-09-21

Kulik, Paul V.

Data processing: database and file management or data structures

Database design

Data structure types

707103, 707102, 395683, G06F 1730

Patent

active

059567309

ABSTRACT:
A method and system for mapping between relational schema and object schema, wherein the relational schema includes a table having a tiebreaker column. In accordance with the present invention, an object-oriented application program may instantiate a persistent dependent object with one of two or more specific instances that is selected in response to the value of a data element in a tiebreaker column. Alternatively, an object-oriented application program may instantiate a persistent entity object in accordance with one of two or more entity classes that is selected in response to the value of a data element in a tiebreaker column.

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