2 files changed, 4 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb b/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb
index ccb79f547a..bbc290f721 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb
@@ -123,6 +123,7 @@ module ActiveRecord
         connection_handler.retrieve_connection(self)
       end
 
+      # Returns true if +ActiveRecord+ is connected.
       def connected?
         connection_handler.connected?(self)
       end
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
index 58992f91da..fe9cbcf024 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
@@ -32,10 +32,12 @@ module ActiveRecord
         @primary = nil
       end
 
+      # Returns +true+ if the column is either of type string or text.
       def text?
         type == :string || type == :text
       end
 
+      # Returns +true+ if the column is either of type integer, float or decimal.
       def number?
         type == :integer || type == :float || type == :decimal
       end
@@ -295,7 +297,7 @@ module ActiveRecord
     #         puts t.class  # => "ActiveRecord::ConnectionAdapters::TableDefinition"
     #       end
     #     end
-    #     
+    #
     #     def self.down
     #       ...
     #     end