class Project
    include DataMapper::Resource

    property :id, String, :key => true
    property :description, Text

    has 0..n, :packages
    belongs_to :account, :key => true
  end

  class Account
    include DataMapper::Resource

    property :id, String, :key => true
    property :description, Text
    property :report_email, String

    has 1..n, :projects, :constraint => :destroy
  end

  class Package
    include DataMapper::Resource

    property :id, String, :key => true
    property :uri, String
    belongs_to :project
  end