diff --git a/db/intf.go b/db/intf.go
new file mode 100644
index 0000000..cf2fdca
--- /dev/null
+++ b/db/intf.go
@@ -0,0 +1,12 @@
+package db
+
+type Identifiable interface {
+	GetID() uint
+	SetID(id uint)
+}
+
+type UserIdentifiable interface {
+	GetID() uint
+	GetUserID() uint
+	SetUserID(userID uint)
+}