Postgres.

models/activation.js

@@ -0,0 +1,15 @@
+export default function (sequelize, DataTypes) {
+  const Activation = sequelize.define('activation', {
+    id: { type: DataTypes.UUID, defaultValue: DataTypes.UUIDV4, primaryKey: true },
+    activated: false,
+    email: DataTypes.STRING,
+  }, {
+    classMethods: {
+      associate: (models) => {
+        Activation.belongsTo(models.user);
+      },
+    },
+  });
+
+  return Activation;
+}