diff --git a/spec/internal/app/models/category.rb b/spec/internal/app/models/category.rb
new file mode 100644
index 0000000..747ea1b
--- /dev/null
+++ b/spec/internal/app/models/category.rb
@@ -0,0 +1,3 @@
+class Category < ActiveRecord::Base
+  has_one :page
+end
diff --git a/spec/internal/app/models/link.rb b/spec/internal/app/models/link.rb
new file mode 100644
index 0000000..bffff6e
--- /dev/null
+++ b/spec/internal/app/models/link.rb
@@ -0,0 +1,3 @@
+class Link < ActiveRecord::Base
+  belongs_to :page
+end
diff --git a/spec/internal/app/models/page.rb b/spec/internal/app/models/page.rb
index 37ce9e7..ff7769d 100644
--- a/spec/internal/app/models/page.rb
+++ b/spec/internal/app/models/page.rb
@@ -1,2 +1,4 @@
 class Page < ActiveRecord::Base
+  has_many :links
+  belongs_to :category
 end
diff --git a/spec/internal/db/schema.rb b/spec/internal/db/schema.rb
index 96ab35d..61b621a 100644
--- a/spec/internal/db/schema.rb
+++ b/spec/internal/db/schema.rb
@@ -1,10 +1,23 @@
 ActiveRecord::Schema.define do
+  create_table :categories, :force => true do |t|
+    t.string :name
+    t.timestamps
+  end
+
   create_table :pages, :force => true do |t|
+    t.integer :category_id
     t.string :name
     t.text   :content
     t.timestamps
   end
 
+  create_table :links, :force => true do |t|
+    t.integer :page_id
+    t.string :name
+    t.string :url
+    t.timestamps
+  end
+
   create_table :moderations, :force => true do |t|
     t.integer  :moderatable_id
     t.string   :moderatable_type