Comment database.yml and include PostgreSQL and SQLite examples.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2823 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/CHANGELOG

 *SVN*
 
+* Comment database.yml and include PostgreSQL and SQLite examples.  [Jeremy Kemper]
+
 * Improve script/plugin on Windows.  #2646 [Chad Fowler]
 
 * The *_plugindoc Rake tasks look deeper into the plugins' lib directories.  #2652 [bellis@deepthought.org]

railties/configs/database.yml

+# Set up database connections for each environment.
+# By default, development, test, and production connect to local MySQL.
+# Example configurations for PostgreSQL and SQLite are at the end.
+
+# MySQL.  Versions 4.1 and 5.0 are recommended.
+#
+# Get the fast C bindings:
+#   gem install mysql
+# And be sure to use new-style password hashing:
+#   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
 development:
   adapter: mysql
   database: <%= app_name %>_development
-  <%= "socket: #{socket}" if socket %>
   username: root
-  password:
+  password: optional
+
+  # Connect on a domain socket.
+  <%= "socket: #{socket}" %>
+
+  # Connect on a TCP socket.  If omitted, the adapter will connect on the
+  # domain socket given by the socket parameter 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'.
@@ -21,3 +38,53 @@ production:
   <%= "socket: #{socket}" if socket %>
   username: root
   password: 
+
+
+# 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: <%= app_name %>_development
+  username: <%= app_name %>
+  password: optional
+
+  # 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
+  dbfile: db/development.sqlite2
+
+
+# SQLite version 3.x
+#   gem install sqlite3-ruby
+sqlite3_example:
+  adapter: sqlite3
+  dbfile: db/development.sqlite3
+
+
+# In-memory SQLite 3 database.  Useful for tests.
+sqlite3_in_memory_example:
+  adapter: sqlite3
+  dbfile: ":memory:"