Postgres Heroku no longer overwrites config / database.yml Rails 4.1.4 (and other questions)

I am very new to RoR and am having a hard time figuring out how to properly configure and use Heroku Postgres with my Rails 4.1.4 application. I am on Ubuntu 14.04.1 LTS.

I want to have local PostgreSQL databases for development and testing, and Heroku Postgres database for production.

Here's what I've done so far:

• I am setting up PostgreSQL following the heroku official doc here
• I installed the pg
  
  gem

• I changed the file config/database.yml
  
  :

  default: &default
    adapter: postgresql
    encoding: unicode
    pool: 5
    timeout: 5000
    username: franklin
    password:
  
  development:
    <<: *default
    database: myapp_development
  
  test:
    <<: *default
    database: myapp_test
  
  production:
    url: <%= ENV["DATABASE_URL"] %>
  
        
  
          
          
          
        
  
      

  I know from here that Heroku no longer overwrites config/database.yml
  
  for Rails 4.1.x apps and what should I (should?) Specify DATABASE_URL
  
  in the production record.

• I ran rake db:create:all
  
  which created local dev and test bases and thenrake db:migrate
  
  

• i git commit
  
  change and then push my app to Heroku withgit push heroku master
  
  
• I ran heroku run rake db:migrate
  
  and got the following message: Running rake db:migrate attached to terminal... up, run.1227
  
  (I'm not sure what this means?)
• Finally I ran heroku restart
  
  

Then, when I connect to my development database, I see the new table created by the command rake db:migrate

, as well as its new data (form view) that I intentionally created by running my application at localhost: 3000. I get the completely expected behavior.

But when I connect to my Heroku Postgres production database, the new table that the command should have created heroku run rake db:migrate

does not exist. And Heroku app doesn't crash when I add data to a non-existent table (form view).

Here are my questions:

• Is my product input set up correctly config/database.yml
  
  ?
• How do I properly migrate to my Heroku Postgres production database?
• Where does the data from my Heroku app go if not in the table?

Any help would be greatly appreciated! Thank!