1) create database and users

	su - postgres
	psql -f a2billing-createdb-user-v1.0.0.sql template1

2) create language (version 8.4 or less)

	psql -f a2billing-createlang-v1.0.0.sql -U a2billinguser mya2billing

3) create and update tables

	psql -f a2billing-schema-v1.4.0.sql -U a2billinguser mya2billing

	psql -f a2billing-prefix-table-v1.4.0.sql -U a2billinguser mya2billing

	psql -f UPDATE-a2billing-v1.4.0-to-v1.4.1.sql -U a2billinguser mya2billing
	psql -f UPDATE-a2billing-v1.4.1-to-v1.4.2.sql -U a2billinguser mya2billing
	psql -f UPDATE-a2billing-v1.4.2-to-v1.4.3.sql -U a2billinguser mya2billing
	so on...
