Which four activities can be performed using SQL Developer
选项：

A: It can be used to debug PL/SQL programs.
B: It can be used to develop server-side java programs.
C: It can be used to administer database security
D: It can be used to back up and recover databases using RMAN.
E: It must be configured to allow SQL to be used.
F: It can run SQL statements and SQL scripts. G: It can be used to develop client-side java programs.