人生选择的前提和基础是()
A. 客观实际
B. 机遇
C. 家庭条件
D. 个人的亲朋关系
Youconnectedtothedatabaseusingthefollowingconnectionstring:CONNECThr/hr@test.us.oracle.com:1521/mydbWhichthreestatementsarecorrectregardingtheconnectionstring?()
A. mydbisaservicename.
B. test.us.oracle.comisadatabasename.
C. 1521isthelistenerportnumber.
D. mydbisahostname.
E. test.us.oracle.comisanetservicename.
F. hrisausername.G.test.us.oracle.comisaninstancename.
哲学上所讲的矛盾是指()
A. 事物自身包含既对立又统一的关系
B. 事物之间存在的对立关系
C. 事物之间或者事物内部相互依存关系
D. 事物之间相互排斥的关系
YouaremaintainingyourproductiondatabaseinOracle10g.Youwantthecircularreuserecordsinthecontrolfileofthetargetdatabasetobereusedasrequired.WhichvaluewillyousetfortheCONTROL_FILE_RECORD_KEEP_TIMEinitializationparameter?()
A. 0
B. 1
C. NONE
DEFAULT