【OCP 071】最新OCP 12c题库考试原题(071-60题)
最新学讯:近期OCP认证正在报名中,因考试人员较多请尽快报名获取最近考试时间,报名费用请联系在线老师,甲骨文官方认证,报名从速!
我要咨询2018年OCP 11g考试原题解析已经讲解30多次课,500多道考试原题,最终达到98%以上的考题覆盖度及95%以上的考试通过率。
2019年OCP 11g将升级到12c,OCP 12c考试解析免费公开课也已经开始了,欢迎大家收看!
OCP解析公开课时间:【每周五晚8点】
OCP解析公开课地址:http://ke.qq.com/course/326223
OCP解析群资料分享:1015267481 验证:ocp
另外,除了OCP公开课,OCM题库直播也同步进行中,OCM最新题库大爆料-【每周四晚8点】,【微信群直播】,可以联系咨询老师进群参与
-------------------------------------------------------
60、(16-10) choose the best answer:
Evaluate the following SQL commands:
SQL>CREATE SEQUENCE ord_seq
INCREMENT BY 10
START WITH 120
MAXVALUE 9999
NOCYCLE;
SQL>CREATE TABLE ord_items
(ord_no NUMBER(4) DEFAULT ord_seq.NEXTVAL NOT NULL,
item_no NUMBER(3),
qty RIUNBER(3) CHECK (qty BETWEEN 100 AND 200),
expiry_date date CHECK (expiry_date > SYSDATE),
CONSTRAINT it_pk PRIMARY REY (ord_no,item_no),
CONSTRAINT ord_fk FOREIGN KEY(ord_no) REFERENCES orders(ord_no));
The command to create a table fails. Identify the reason for the SQL statement failure.
A) You cannot use SYSDATE in the condition of a CHECK constraint.
B) You cannot use the NEXTVAL sequence value as a DEFAULT value for a column.
C) You cannot use the BETWEEN clause in the condition of a CHECK constraint.
D) You cannot use ORD_NO and ITEM_NO columns as a composite primary key because ORD_NO is also the FOREIGN KEY.
Answer:A
(check 约束中明确要求不能:
参考 CURRVAL, NEXTVAL, LEVEL, 和 ROWNUM 这样的伪列
调用 SYSDATE, UID, USER,和 USERENV 函数
参考其它列值的查询
)