Object-Relational Mapping Types

TopLink supports the object-relational mappings listed in Table 49-1.

These mappings allow for an object model to persist in an object-relational data model. Currently, TopLink Workbench does not support object-relational mappings–they must be defined in code or through amendment methods.

Table 49-1 TopLink Object Relationship Mapping Types

Type	Description	Type	TopLink Workbench	Java
"Object-Relational Structure Mapping"	Map to object-relational aggregate structures (the Struct type in JDBC and the OBJECT type in Oracle Databasei)	Advanced
"Object-Relational Reference Mapping"	Map to object-relational references (the Ref type in JDBC and the REF type in Oracle Database)	Advanced
"Object-Relational Array Mapping"	Map a collection of primitive data to object-relational array data types (the Array type in JDBC and the VARRAY type in Oracle Database).	Advanced
"Object-Relational Object Array Mapping"	Map to object-relational array data types (the Array type in JDBC and the VARRAY type in Oracle Database).	Advanced
"Object-Relational Nested Table Mapping"	Map to object-relational nested tables (the Array type in JDBC and the NESTED TABLE type in Oracle Database)	Advanced