Differences between rails projects generated with --database with postgresq| versus mysql.

gistfile1.diff

diff --git c/Gemfile i/Gemfile
index 36c38ba..e999a91 100644
--- c/Gemfile
+++ i/Gemfile
@@ -3,8 +3,8 @@ source 'https://rubygems.org'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '4.0.0'
 
-# Use postgresql as the database for Active Record
-gem 'pg'
+# Use mysql as the database for Active Record
+gem 'mysql2'
 
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 4.0.0'
diff --git c/Gemfile.lock i/Gemfile.lock
index 9e82364..c9ba3af 100644
--- c/Gemfile.lock
+++ i/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
     mime-types (1.25)
     minitest (4.7.5)
     multi_json (1.7.9)
-    pg (0.16.0)
+    mysql2 (0.3.13)
     polyglot (0.3.3)
     rack (1.5.2)
     rack-test (0.6.2)
@@ -111,7 +111,7 @@ DEPENDENCIES
   coffee-rails (~> 4.0.0)
   jbuilder (~> 1.2)
   jquery-rails
-  pg
+  mysql2
   rails (= 4.0.0)
   sass-rails (~> 4.0.0)
   sdoc
diff --git c/config/database.yml i/config/database.yml
index 3ee91ed..998f9b5 100644
--- c/config/database.yml
+++ i/config/database.yml
@@ -1,60 +1,39 @@
-# PostgreSQL. Versions 8.2 and up are supported.
+# MySQL.  Versions 4.1 and 5.0 are recommended.
 #
-# Install the pg driver:
-#   gem install pg
-# On OS X with Homebrew:
-#   gem install pg -- --with-pg-config=/usr/local/bin/pg_config
-# On OS X with MacPorts:
-#   gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config
-# On Windows:
-#   gem install pg
-#       Choose the win32 build.
-#       Install PostgreSQL and put its /bin directory on your path.
+# Install the MYSQL driver
+#   gem install mysql2
 #
-# Configure Using Gemfile
-# gem 'pg'
+# Ensure the MySQL gem is defined in your Gemfile
+#   gem 'mysql2'
 #
+# And be sure to use new-style password hashing:
+#   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
 development:
-  adapter: postgresql
-  encoding: unicode
+  adapter: mysql2
+  encoding: utf8
   database: postgres_to_mysql_development
   pool: 5
-  username: postgres_to_mysql
+  username: root
   password:
-
-  # Connect on a TCP socket. Omitted by default since the client uses a
-  # domain socket that doesn't need configuration. Windows does not have
-  # domain sockets, so uncomment these lines.
-  #host: localhost
-
-  # The TCP port the server listens on. Defaults to 5432.
-  # If your server runs on a different port number, change accordingly.
-  #port: 5432
-
-  # Schema search path. The server defaults to $user,public
-  #schema_search_path: myapp,sharedapp,public
-
-  # Minimum log levels, in increasing order:
-  #   debug5, debug4, debug3, debug2, debug1,
-  #   log, notice, warning, error, fatal, and panic
-  # Defaults to warning.
-  #min_messages: notice
+  socket: /tmp/mysql.sock
 
 # 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: postgresql
-  encoding: unicode
+  adapter: mysql2
+  encoding: utf8
   database: postgres_to_mysql_test
   pool: 5
-  username: postgres_to_mysql
+  username: root
   password:
+  socket: /tmp/mysql.sock
 
 production:
-  adapter: postgresql
-  encoding: unicode
+  adapter: mysql2
+  encoding: utf8
   database: postgres_to_mysql_production
   pool: 5
-  username: postgres_to_mysql
+  username: root
   password:
+  socket: /tmp/mysql.sock