fteem

ActiveRecord Terminology  		 	DataMapper Terminology
has_many 	                 	 	has n
has_one 	 	 	 	 	has 1
belongs_to 	 	 	 	 	belongs_to
has_and_belongs_to_many 	 	 	has n, :things, :through => Resource
has_many :association, :through => Model 	has n, :things, :through => :model

fteem

DataMapper::setup(:default, "sqlite3://#{Dir.pwd}/blog.db")

class Post
  include DataMapper::Resource
  property :id, Serial
  property :title, String
  property :body, Text
  property :created_at, DateTime
  property :updated_at, DateTime
end