ocp-429

QUESTION NO: 429
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?), 4
PARTITION Q2 VALUES LESS THAN (TO_DATE(?1-jul-2007?d-mon-yyyy?), 7
PARTITION Q3 VALUES LESS THAN (TO_DATE(?1-oct -2007?d-mon-yyyy?),
10 PARTITION Q4 VALUES LESS THAN
(TO_DATE(?1-jan-2008?d-mon-yyyy?))1;
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.
Answer: B,C

上述报表的两种后果是什么？

B.创建采购订单和采购订单项目表，每个表占有四个分区。

C.采购订单项目表分区和“采购订单”表的分区在同一表空间存在。