单项选择题
A.host naming method
B.local naming method
C.external naming method
D.directory naming method
单项选择题 While planning to manage more than one database in your system， you perform the following activities： 1. Organize different categories of files into independent subdirectories. 2. Use consistent naming convention for database files. 3. Separate administrative information pertaining to each database. Which option corresponds to the type of activities performed by you？（）
多项选择题 Whichtwostatementsaretrueaboutsimpleviews？（）
单项选择题 YouwanttheuserAPP_DBAtoadministertheOracledatabasefromaremotemachine.APP_DBAisgrantedtheSYSDBAprivilegetoperformadministrativetasksonthedatabase.WhichfileisusedbytheOracledatabaseservertoauthenticateAPP_DBA？（）