Oracle TopLink Developer's Guide
10g Release 3 (10.1.3) B13593-01 |
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In an object-relational data model, structures reference each other through refs–not through foreign keys (as in a traditional data model). Refs are based on the target structure's ObjectID
. They represent an object reference in Java.
TopLink maps refs with the ReferenceMapping
class. The reference mapping does not require foreign key information (because of the object-relational support of the database).
See "Configuring an Object-Relational Reference Mapping" for more information.