--- /dev/null
+class RemoveKindColumns < ActiveRecord::Migration
+ def up
+ remove_column :links, :head_kind
+ remove_column :links, :tail_kind
+ remove_column :logs, :object_kind
+ end
+
+ def down
+ add_column :links, :head_kind, :string
+ add_column :links, :tail_kind, :string
+ add_column :logs, :object_kind, :string
+ end
+end