diff --git a/db/migrations/006_create_sources_and_notes.rb b/db/migrations/006_create_sources_and_notes.rb
new file mode 100644
index 0000000..25181e3
--- /dev/null
+++ b/db/migrations/006_create_sources_and_notes.rb
@@ -0,0 +1,22 @@
+Sequel.migration do
+  change do
+    create_table(:sources) do
+      foreign_key :entity_id, :entities
+      foreign_key :source_id, :entities
+
+      DateTime :created_at, null: false
+      DateTime :modified_at, null: false
+
+      unique %i[entity_id source_id]
+    end
+
+    create_table(:notes) do
+      foreign_key :entity_id, :entities
+
+      String :text, text: true
+
+      DateTime :created_at, null: false
+      DateTime :modified_at, null: false
+    end
+  end
+end