feat: complete day 15

day15/db.js

@@ -0,0 +1,9 @@
+require("dotenv").config();
+const { Sequelize } = require("sequelize");
+
+const sequelize = new Sequelize("day_15", "root", process.env.DB_PASSWORD, {
+  host: "localhost",
+  dialect: "mysql",
+});
+
+module.exports = sequelize;