connecting to remote mysql db, saving market alerts

backend/MarketAlert.js

@@ -0,0 +1,18 @@
+const Sequelize = require("sequelize");
+const sequelize = require("./db.js");
+const MarketAlert = sequelize.define("market_alert", {
+  id: {
+    type: Sequelize.INTEGER,
+    autoIncrement: true,
+    primaryKey: true
+  },
+  olx_url: Sequelize.STRING,
+  last_date: Sequelize.STRING,
+  email: {
+    type: Sequelize.STRING,
+    allowNull: false,
+    unique: true
+  }
+});
+
+module.exports = MarketAlert;