Reference partitioning
From Oracle FAQ
Reference partitioning is a partitioning method introduced in Oracle 11g. Using reference partitioning, a child table can inherit the partitioning characteristics from a parent table.
Example[edit]
Create a parent table with range partitioning:
CREATE TABLE orders ( order_id NUMBER PRIMARY KEY, order_date DATE NOT NULL, customer_id NUMBER NOT NULL, shipper_id NUMBER) PARTITION BY RANGE (order_date) ( PARTITION y1 VALUES LESS THAN (TO_DATE('01-JAN-2006', 'DD-MON-YYYY')), PARTITION y2 VALUES LESS THAN (TO_DATE('01-JAN-2007', 'DD-MON-YYYY')), PARTITION y3 VALUES LESS THAN (TO_DATE('01-JAN-2008', 'DD-MON-YYYY')));
Create child table with reference partitioning:
CREATE TABLE order_items ( order_id NUMBER NOT NULL, product_id NUMBER NOT NULL, price NUMBER, quantity NUMBER, CONSTRAINT order_items_fk FOREIGN KEY (order_id) REFERENCES orders) PARTITION BY REFERENCE (order_items_fk);
Also see[edit]
- Foreign key - referential integrity constraint pointing a child table to its parent