diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index <HASH>..<HASH> 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -171,14 +171,14 @@ module ActiveRecord
         false
       end
 
-      # Does this adapter support database extensions?  As of this writing
-      # only postgresql does.
+      # Does this adapter support database extensions? As of this writing only
+      # postgresql does.
       def supports_extensions?
         false
       end
 
-      # A list of extensions, to be filled in by databases that
-      # support them (at the moment, postgresql).
+      # A list of extensions, to be filled in by adapters that support them. At
+      # the moment only postgresql does.
       def extensions
         []
       end
copy-edits RDoc in fba<I>f

This revision makes the terminology uniform with the rest of the file.
In general we describe these methods in terms of the adapter, rather
than the database. (As a side note, if we wanted to refer to the
database we would write "PostgreSQL".)