You want to configure and schedule offline database backups to run automatically. Which tool or utilitywould you use to achieve this() the XML script。 the PL/SQL script。 the DBMS_SCHEDULER package。 Enterprise Manager to schedule the backu。
幼儿园管理的首要原则() 教养为主的整体性原则。 民主管理原则。 方向性原则。 社会协调性原则。
下面哪个功能键可以调出Delphi 的联机帮助信息() F1键。 F2键。 F3键。 F4键。
When is an implicit anchor created?() When an object is enclosed by another object. 。 When a page break after pagination property is enabled. 。 When a link is created between two objects. 。 When a keep with anchoring object pagination property is enabled.。
含剧毒气体组分()的混合气体,称为剧毒性混合气。 不论浓度大小。 0.1%以上。 0.5%以上。 2%以上。
You are using the following command to clear the log file group: ALTER DATABASE CLEAR LOFFILE GROUP 2; In which case would the command be successful?()