Evaluate the following statements:
CREATE TABLE purchase_orders
(po_id NUMBER(4),
po_date TIMESTAMP,
supplier_id NUMBER(6),
po_total NUMBER(8,2),
CONSTRAINT order_pk PRIMARY KEY(po_id))
PARTITION BY RANGE(po_date)
(PARTITION Q1 VALUES LESS THAN (TO_DATE(?1-apr-2007?d-mon-yyyy?),
PARTITION Q2 VALUES LESS THAN (TO_DATE(?1-jul-2007?d-mon-yyyy?),
PARTITION Q3 VALUES LESS THAN (TO_DATE(?1-oct -2007?d-mon-yyyy?),
PARTITION Q4 VALUES LESS THAN (TO_DATE(?1-jan-2008?d-mon-yyyy?));
CREATE TABLE purchase_order_items
(po_id NUMBER(4) NOT NULL,
product_id NUMBER(6) NOT NULL,
unit_price NUMBER(8,2),
quantity NUMBER(8),
CONSTRAINT po_items_fk
FOREIGN KEY (po_id) REFERENCES purchase_orders(po_id))
PARTITION BY REFERENCE(po_items_fk);
What are the two consequences of the above statements? (Choose two.)
A.
Partitions of PURCHASE_ORDER_ITEMS have system-generated names.
B.
Both PURCHASE_ORDERS and PURCHASE_ORDER_ITEMS tables are created with four
partitions each.
C.
Partitions of the PURCHASE_ORDER_ITEMS table exist in the same tablespaces as the
partitions of the PURCHASE_ORDERS table.
D.
The PURCHASE_ORDER_ITEMS table inherits the partitioning key from the parent table by
automatically duplicating the key columns.
E.
Partition maintenance operations performed on the PURCHASE_ORDER_ITEMS table are
automatically reflected in the PURCHASE_ORDERS table.