Association Class Transformation

Associations can have association classes.

Regarding O/R Mapping, association class is only meaningful for many-to-many associations. Persistent attributes in the association entity class will be transformed into columns of the middle table.

Given the example listed in the Many-to-many transformation section; we now define one association class to hold ultra information for the association:



The generated middle table and reference keys will be the following:




Created October 7, 2009. Send feedback on this help topic to Sybase Technical Publications: pubs@sybase.com