A.OracleHome_NAMETNSListener B.OracleServiceSID C.OracleHome_NameAgent D.OracleHome_NameHTTPServer
在Oracle中,有一個(gè)教師表teacher的結(jié)構(gòu)如下: 下面哪個(gè)語(yǔ)句顯示沒(méi)有Email地址的教師的姓名()。
A.select name from teacher where email=null B.select name from teacher where email<>null C.select name from teacher where email is null D.select name from teacher where email is not null
A.用戶進(jìn)程(user process) B.服務(wù)器進(jìn)程(Server process) C.檢查點(diǎn)進(jìn)程(CKPT) D.日志進(jìn)程(LGWR)