Oracle認(rèn)證考試章節(jié)練習(xí)(2020.01.15)

The EMPLOYEES table contains these columns:
EMPLOYEE_ID NUMBER(4)
LAST_NAME VARCHAR2 (25)
JOB_ID VARCHAR2(10)
You want to search for strings that contain 'SA_' in the JOB_ID column. Which SQL statement do you use?（）
 

Given：

What is the result？（）

Examine the following commands executed in your database： SQL> ALTER SESSION RECYCLEBIN=ON； Session altered 
SQL> CREATE TABLE emp TABLESPACE tbsfd AS SELECT * FROM hr.employees； 
Table created. 
Further， you executed the following command to drop the table： 
SQL> DROP TABLE emp； Table dropped. 
What happens in this scenario？ （）

Given：

Which code， inserted at line 15， allows the class Sprite to compile？（）