thr3ads.net - Rails

Hello All,

Yesterday i put RoR  with Locomotive. I am very happy :p.
So I follow this tuto
(http://developer.apple.com/tools/rubyonrails.html). I used Sqlite.

my database.yml
# MySQL (default setup).  Versions 4.1 and 5.0 are recommended.
#
# Get the fast C bindings:
#   gem install mysql
#   (on OS X: gem install mysql -- --include=/usr/local/lib)
# And be sure to use new-style password hashing:
#   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
development:
  adapter: sqlite
  dbfile: db/expense_developement

  # Connect on a TCP socket.  If omitted, the adapter will connect on the
  # domain socket given by socket instead.
  #host: localhost
  #port: 3306

# Warning: The database defined as 'test' will be erased and
# re-generated from your development database when you run 'rake'.
# Do not set this db to the same as development or production.
test:
  adapter: mysql
  database: expenses_test
  username: root
  password:
  socket: /tmp/mysql.sock

production:
  adapter: mysql
  database: expenses_production
  username: root
  password:
  socket: /tmp/mysql.sock

# PostgreSQL versions 7.4 - 8.1
#
# Get the C bindings:
#   gem install postgres
# or use the pure-Ruby bindings on Windows:
#   gem install postgres-pr
postgresql_example:
  adapter: postgresql
  database: expenses_development
  username: expenses
  password:

  # Connect on a TCP socket.  Omitted by default since the client uses a
  # domain socket that doesn't need configuration.
  #host: remote-database
  #port: 5432

  # Schema search path.  The server defaults to $user,public
  #schema_search_path: myapp,sharedapp,public

  # Character set encoding.  The server defaults to sql_ascii.
  #encoding: UTF8

  # Minimum log levels, in increasing order:
  #   debug5, debug4, debug3, debug2, debug1,
  #   info, notice, warning, error, log, fatal, or panic
  # The server defaults to notice.
  #min_messages: warning

# SQLite version 2.x
#   gem install sqlite-ruby
sqlite_example:
  adapter: sqlite
  database: db/development.sqlite2

# SQLite version 3.x
#   gem install sqlite3-ruby
sqlite3_example:
  adapter: sqlite3
  database: db/development.sqlite3

# In-memory SQLite 3 database.  Useful for tests.
sqlite3_in_memory_example:
  adapter: sqlite3
  database: ":memory:"

When i tabe this line in Terminal
$ script/generate Model Expense

I show only that
      exists  app/models/
      exists  test/unit/
      exists  test/fixtures/
      create  app/models/expense.rb
      create  test/unit/expense_test.rb
      create  test/fixtures/expenses.yml

i didn't see this commands
create  db/migrate
create  db/migrate/001_create_expenses.rb

I don't have this folder and this file

Thanks

Bolo