A.扶助正气以驱邪外出
B.散中有补,不致耗伤真元
C.补中益气
D.大补元气
E.以上均不是
第1题
A. a cumulative level 1 backup
B. a differential level 1 backup
C. a full backup
D. a whole backup
第2题
A. SELECT last_name FROM EMP WHERE last_ name LIKE ‘_A%‘;
B. SELECT last_name FROM EMP WHERE last name =‘*A%‘
C. SELECT last_name FROM EMP WHERE last name =‘_A%‘;
D. SELECT last_name FROM EMP WHERE last name LIKE ‘*A%‘
第3题
A. SELECT TO_CHAR(SYSDATE,‘yyyy‘) FROM dual;
B. SELECT TO_DATE(SYSDATE,‘yyyy‘) FROM dual;
C. SELECT DECODE(SUBSTR(SYSDATE, 8), ‘YYYY‘) FROM dual;
D. SELECT DECODE(SUBSTR(SYSDATE, 8), ‘year‘) FROM dual;
E. SELECT TO_CHAR(SUBSTR(SYSDATE, 8,2),‘yyyy‘) FROM dual;
第4题
A.performpoint-in-timerecovery
B.performaFlashbackTableoperationtorestorethetabletothestateitwasintwodaysago
C.performaFlashbackDatabaseoperationtorestorethedatabasetothestateitwasintwodaysago
D.performFlashbackVersionsQueryandFlashbackTransactionQuerytodetermineallthenecessaryundoSQLstatements,andthenusethemforrecovery
第5题
A. DELETE FROM employees WHERE employee_id = (SELECT employee_id FROM employees);
B. DELETE * FROM employees WHERE employee_id = (SELECT employee_id FROM new_ employees);
C. DELETE FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = (‘Carrey‘)‘
D. DELETE * FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE last_ name = (‘Carrey‘)‘
第6题
A. Once created, a sequence belongs to a specific schema.
B. Once created, a sequence is linked to a specific table.
C. Once created, a sequence is automatically available to all users.
D. Only the DBA can control which sequence is used by a certain table.
E. Once created, a sequence is automatically used in all INSERT and UPDATE statements.
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