drop table reference_types;
drop sequence reference_types_seq;
drop table reference_codes;
drop table products;
drop sequence products_seq;
drop table tariffs;
drop table product_tariffs;
drop table suburbs;
drop table streets;
drop sequence streets_seq;
drop table users;
drop sequence users_seq;
drop table articles;
drop sequence articles_seq;
drop table readings;
drop sequence readings_seq;
drop table groups;
drop sequence groups_seq;
drop table memberships;
drop table membership_statuses;
drop sequence membership_statuses_seq;
drop table departments;
drop table employees;
drop sequence employees_seq;
drop table comments;
drop sequence comments_seq;
drop table hacks;
drop table kitchen_sinks;
drop table restaurants;
drop table restaurants_suburbs;