EMPDET is an external table containing the columns EMPNO and ENAME. Which command would work in relation to the EMPDET table? ()
A.A B.B C.C D.D
多项选择题WhichthreepossiblevaluescanbesetfortheTIME_ZONEsessionparameterbyusingtheALTERSESSIONcommand?()
A. ’os’ B. local C. -8:00’ D. dbtimezone Li E. ’Australia’