added notes

db/migrate/20100224172146_create_note_versions.rb

@@ -0,0 +1,23 @@
+class CreateNoteVersions < ActiveRecord::Migration
+  def self.up
+    create_table :note_versions do |t|
+      t.column :note_id, :integer, :null => false
+      t.column :updater_id, :integer, :null => false
+      t.column :updater_ip_addr, "inet", :null => false
+      t.column :x, :integer, :null => false
+      t.column :y, :integer, :null => false
+      t.column :width, :integer, :null => false
+      t.column :height, :integer, :null => false
+      t.column :is_active, :boolean, :null => false, :default => true
+      t.column :body, :text, :null => false
+      t.timestamps
+    end
+    
+    add_index :note_versions, :note_id
+    add_index :note_versions, :updater_id
+  end
+
+  def self.down
+    drop_table :note_versions
+  end
+end