==== Requirements

1) PostgreSQL database installed
2) PostgreSQL gem installed. For mac users, follow this instructions: http://www.icoretech.org/2009/08/how-to-install-pg-postgresql-gem-on-snow-leopard-64-bit/

==== Running the test

1) Firtly, install the dependencies: bundle install
2) Create the database: rake db:create
3) Run the migrations: rake db:migrate
4) Run the test: rake dev:fixtures
5) Analize the difference of size on ${POSTGRESQL_HOME}/data