多项选择题 While setting up the database for your production environment， you want to create a user with following requirements.   1.The objects created by the user must be stored in a tablespace， TBS1， if the  TABLESPACE option is not defined during the object creation.   2.The user should be able to use 10MB of space in the tablespace TBS1.   3.The user must change the password immediately after logging in for the first time.   Which three options of the CREATE USER command would you use to achieve this objective？（）

单项选择题 Inyourdatabase，theusersSYSandSYSTEMhavebeenassignedtheprofiles，ADMIN_PROF1andADMIN_PROF2，respectively.TherestofthedatabaseadministratorsareassignedtheprofileADMIN_PROF3.Youcreateaprofile，USER_PROF，andassignittotheapplicationuser，Adams.Afteraweekyourealizethattheprofileisnolongerrequiredandyoudecidetodropit.WhatwillAdam’sprofilebeaftertheUSER_PROFprofilehasbeendropped？（）

单项选择题 You are connecting to an Oracle database server from a client by using the following connect string：   SQL> CONNECT hr/hr@pdserver.us.oracle.com：1521/proddb   Which naming method is being used in this case？（）