Reference
https://www.youtube.com/watch?v=bqpgbTq8bbw
How to connect Express to MyuSQL
npm init --y
npm install --save mysql
// app.js
const mysql = require('mysql');
const connection = mysql.createConnection({
  host     : 'localhost',
  user     : 'username',
  password : 'password',
  database : 'databasename'
});
connection.connect((err) => {
    if(err) throw err;
    console.log('Connected to MySQL Server!');
});
node app.js
>> Connected to MySQL Server!