Sample sequelize model

User.js

const Sequelize = require('sequelize');
const connection = new Sequelize('<db name here>','<db username here>','<db passworfd here>',{ // Defining our connect by Sequelize constructor
  host: '<db host here eg localhost, db.example.com, 127.0.0.1 >',
  dialect: 'postgres' // According to which dbms you are using
})

const User = connection.define('users',{
  id:{
    type: Sequelize.INTEGER, // All dataTypes format available here http://bit.ly/2ofwgAm
    primaryKey: true,
    autoIncrement: true
  },
  username: Sequelize.TEXT,
  password: Sequelize.TEXT
});

// Syncing all our model to our DB
connection.sync().then(()=>{
  console.log("Connected to DB");
})

module.exports = User; // Exporting our user model