db/migrate/20140307023453_create_users.rb


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class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :name
      t.string :email
      t.string :user_name

      t.timestamps
    end
    add_index :users, :email, unique: true
    add_index :users, :user_name, unique: true
  end
end