多项选择题
A.Create a view on the table.
B.Create an index on the table.
C.Create a synonym on the table.
D.Add a virtual column to the table.
E.Update the table using the UPDATE statement.
F.Delete rows in the table using the DELETE command
单项选择题 Your database is configured in shared server mode. However， your senior DBA asks you to modify the value ofthe PRIVATE_SGA limit in the profile of the users. What could be the reason for this（）
多项选择题 Whichtwostatementscorrectlydescribetherelationbetweenadatafileandthelogicaldatabasestructures（）
多项选择题 A constraint in a table is defined with the INITIALLY IMMEDIATE clause. You executed the ALTER TABLEcommand with the ENABLE VALIDATE option to enable the constraint that was disabled. What are the twoeffects of this command（）