2) The SQL statement: DROP TABLE STAFF; a) Permanently removes the entire staff table b) Performs a rollback action to refresh the contents of the staff table to the last database commit c) Removes all rows from the table but maintains the table structure d) None of the above 3) Concurrency problems that can occur in a multi-user environment include: a) Conceptual updates b) Isolation updates c) lost updates d) None of the above Questions 4-7 relate to the following relation, R: EE XX Z AA BB CC DD FOLL Y FB! 4) Functional Dependency 1 (FDI) can be written as: a) (CC,DD.EE)->(AA,BB) b) (AA)->(CC,DD,EE) c) (AA,BB)->(CC,DD,EE) d) None of the above 5) Functional Dependency 2(FD2) illustrates a: a) Transitive Dependency h) Tullar functional donandan