Update auto-generated DB schema definition

db/schema.rb

@@ -16,15 +16,15 @@ ActiveRecord::Schema.define(:version => 20110916003929) do
   create_table "playlists", :force => true do |t|
     t.integer  "user_id"
     t.string   "name"
-    t.datetime "created_at", :null => false
-    t.datetime "updated_at", :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
   end
 
   create_table "sessions", :force => true do |t|
     t.string   "session_id", :null => false
     t.text     "data"
-    t.datetime "created_at", :null => false
-    t.datetime "updated_at", :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
   end
 
   add_index "sessions", ["session_id"], :name => "index_sessions_on_session_id"
@@ -34,21 +34,21 @@ ActiveRecord::Schema.define(:version => 20110916003929) do
     t.integer  "track_id"
     t.string   "sha256"
     t.string   "mime_type"
-    t.datetime "created_at", :null => false
-    t.datetime "updated_at", :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
   end
 
   create_table "tracks", :force => true do |t|
     t.string   "name"
-    t.datetime "created_at", :null => false
-    t.datetime "updated_at", :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
   end
 
   create_table "users", :force => true do |t|
     t.string   "email"
     t.string   "password_hash"
-    t.datetime "created_at",    :null => false
-    t.datetime "updated_at",    :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
   end
 
   add_index "users", ["email"], :name => "index_users_on_email", :unique => true