ocp 11gÈÏÖ¤¿¼ÊÔ051Ìâ¿â½âÎö£ºµÚ44Ì⣬ÍêÕûÌâ¿âÇëµã»÷ÕâÀïÁªÏµÀÏʦ×ÉѯÁ˽â

44. View the Exhibit and examine the structure of the ORD table.

Evaluate the following SQL statements that are executed in a user session in the specified order:

CREATE SEQUENCE ord_seq;

SELECT ord_seq.nextval

FROM dual;

INSERT INTO ord

VALUES (ord_seq.CURRVAL, '25-jan-2007',101);

UPDATE ord

SET ord_no= ord_seq.NEXTVAL

WHERE cust_id =101;

What would be the outcome of the above statements?

A. All the statements would execute successfully and the ORD_NO column would contain the value 2 for

the CUST_ID 101.

B. The CREATE SEQUENCE command would not execute because the minimum value and maximum

value for the sequence have not been specified.

C. The CREATE SEQUENCE command would not execute because the starting value of the sequence

and the increment value have not been specified.

D. All the statements would execute successfully and the ORD_NO column would have the value 20 for

the CUST_ID 101 because the default CACHE value is 20.

Answer: A