Red Hat APPLICATION SERVER - JONAS Manual page 120

112
ejb-name A /ejb-name
/relationship-role-source
cmr-field
cmr-field-name b /cmr-field-name
/cmr-field
/ejb-relationship-role
ejb-relationship-role
!-- B =
ejb-relationship-role-name b2a /ejb-relationship-role-name
multiplicity One /multiplicity
relationship-role-source
ejb-name B /ejb-name
/relationship-role-source
cmr-field
cmr-field-name a /cmr-field-name
/cmr-field
/ejb-relationship-role
/ejb-relation
/relationships
.....
8.11.4.1.2. Database Mapping
Two mappings are possible, one or another of the tables may hold the foreign key.
Case 1:
t_A
c_id1A
...
t_B
c_id1B c_id2B
... ...
Case 2:
t_A
c_id1A c_id2A
... ...
t_B
c_id1B
...
A --
c_id2A
...
c_id2B
...
Chapter 8. Developing Entity Beans
cfk_id1B
...
cfk_id1A
...
cfk_id2B
...
cfk_id2A
...