Access denied for user 'root'@'localhost'

Hi guys, You know the simple "Hello World!" application which get rails to
say on a web page "Hello World!", yeah? Well i'm am having trouble with it. Everytime i go onto the http://localhost:3000/say/hello it come up
with this:

Mysql::Error in SayController#hello #28000Access denied for user 'root'@'localhost' (using password: NO) RAILS_ROOT: C:/ruby/demo

What exactly is in your database.yml ?

Fred

Can you connect on the command line with

mysql -u root -p demo_development