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UserSCOTTexecutesthefollowingcommandontheEMPtablebuthasnotissuedCOMMIT，ROLLBACK，oranydatadefinitionlanguage（DDL）command：SQL>SELECTenameFROMempWHEREjob=’CLERK’FORUPDATEOFempno；SCOTThasopenedanothersessiontoworkwiththedatabaseinstance.WhichthreeoperationswouldwaitwhenissuedinSCOTT’ssecondsession（）
A.LOCKTABLEempINSHAREMODE；
B.LOCKTABLEempINEXCLUSIVEMODE；
C.UPDATEempSETsal=sal*1.2WHEREjob=ANAGER？UPDATEempSETsal=sal*1.2WHEREjob=？ANAGER？
D.INSERTINTOemp（empno，ename）VALUES（1289，’Harry’）；
E.SELECTenameFROMempWHEREjob=’CLERK’FORUPDATEOFempno
参考答案
更多 “ UserSCOTTexecutesthefollowingcommandontheEMPtablebuthasnotissuedCOMMIT，ROLLBACK，oranydatadefinitionlanguage（DDL）command：SQLSELECTenameFROMempWHEREjob=’CLERK’FORUPDATEOFempno；SCOTThasopenedanothersessiontoworkwiththedatabaseinstance.WhichthreeoperationswouldwaitwhenissuedinSCOTT’ssecondsession（）A.LOCKTABLEempINSHAREMODE；B.LOCKTABLEempINEXCLUSIVEMODE；C.UPDATEempSETsal=sal*1.2WHEREjob=ANAGER？UPDATEempSETsal=sal*1.2WHEREjob=？ANAGER？D.INSERTINTOemp（empno，ename）VALUES（1289，’Harry’）；E.SELECTenameFROMempWHEREjob=’CLERK’FORUPDATEOFempno ” 相关考题
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