drop table  om_p_admin;

drop table  om_p_user;

drop table  om_p_rank;

drop table  om_p_department;

drop table  om_p_category;

drop table  om_p_group;

drop table om_p_role;

drop table om_p_user_department;

drop table om_p_user_group;

drop table om_p_user_role;
