单项选择题
A.run a procedure to check the tablespace space usage
B.define the warning threshold for the tablespace at 75% in Database Control
C.create a trigger to be executed when tablespace space usage reaches 75%
D.submit a job by using DBMS_JOB package to check the free space in the tablespace at regular intervals
E.define the warning threshold to be 75% for the tablespace by ALTER TABLESPACE .. ADD THRESHOLD command
单项选择题 YouobservethatinyourPRODdatabase，customerinformationisbeingmodifiedbysomeunauthorizedusers.YouwanttokeeptrackofallofthetransactionshappeningonthetableusingPL/SQL.WhichtypeofPL/SQLsubprogramorconstructwouldyouusetoaccomplishthistask？（）
单项选择题 Youwanttocreateanewoptimizeddatabaseforyourtransactionalproductionenvironmenttobeusedbyafinancialapplication.Whilecreatingthedatabase，youwanttheOraclesoftwaretotakecareofallbasicsettingstooptimizethedatabaseperformance.Whichmethodwouldyouusetoachievethisobjective？（）
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？（）