title: How do I work with a LEGACY database in Rails?
body: <p>I'm working on a Rails web site that profiles stock mutual funds and ETFs.  I ALREADY HAVE a separate Ruby script that runs nightly and populates a Postgres database with data on these mutual funds and ETFs.</p>
  
  <p>Chapter 6 of Rails tutorial isn't quite what I'm looking for.  The differences between what I'm trying to do and what chapter 6 of Rails tutorial does are:
  1.  In my Rails site, there is no need to create a database, because it has already been populated.  So I don't think I need to use "rails generate" or "rake db:migrate".  (Or am I wrong?)
  2.  My Rails site only reads data and does not add, delete, or edit data.</p>