Sequel migration

01_initial.rb

Sequel.migration do
	up do
		create_table :customers do
			primary_key :id
			column :name,         :varchar, size:60,       null:false
			column :organization, :varchar, size:60,       null:false
			column :email,        :varchar, size:60
			column :subscribed,   :boolean, default:false, null:false
			column :extra_str,    :varchar, size:60
			column :extra_int,    :integer
		end
	end
	down do
		drop_table :customers
	end
end 

Run the migration with

sequel -m . sqlite://foo.db

where . means "look in the current directory for migration files".