In a "meet in the middle" mapping scenario where you are mapping an EJB to multiple tables, the tool only supports mapping underlying tables that are connected by "primary key to primary key" foreign keys. These foreign keys can be arranged either as a daisy-chain from leaf tables to primary table or with the foreign keys of all leaf tables pointing to the primary table.
The tool does not support any other arrangement of foreign keys between the tables, and the tool does not warn you that other arrangements will not be mapped properly. This problem exists both for root/leaf inheritance mappings and for a single EJB mapped to multiple tables.
Return to the main readme file
(C) Copyright IBM Corporation 2000, 2003. All Rights Reserved.