A.改進的性能 B.數(shù)據(jù)的完整性和一致性 C.可用性和易于維護 D.用戶安全
A.SELECT ename,sal*12‘Annual Salary’FROM emp B.SELECT ename,sal*12“Annual Salary”FROM emp C.SELECT ename,sal*12AS Annual SalaryFROM emp D.SELECT ename,sal*12AS INITCAP(“Annual Salary”)FROM emp
A.OracleHOME_NAMETNSListener B.OracleServiceSID C.OracleHOME_NAMEAgent D.OracleHOME_NAMEHTTPServer