Sequelize Database Relations

app.js

var Sequelize = require("sequelize");

var sequelize = new Sequelize('myDatabase', 'root', '', {
  host: 'localhost',
  dialect: 'mysql',

  pool: {
    max: 5,
    min: 0,
    idle: 10000
  },

});

var Bar = sequelize.define('bar', {
    barName: Sequelize.STRING
});

var Bartender = sequelize.define('bartender', {
  firstName: {
    type: Sequelize.STRING
  },
  lastName: {
    type: Sequelize.STRING
  },
  flag: {
      type: Sequelize.BOOLEAN, allowNull: false, defaultValue: true
  },
  barId: {
      type: Sequelize.INTEGER,
      reference: {
          model: Bar,
          key: 'id',
      },
      field: "bar_id"
  }
});

Bartender.belongsTo(Bar, {foreignKey: 'bar_id'});
Bar.hasMany(Bartender);


Bar.sync({force: true}).then(function(){
    return Bar.create({
        barName: "Torres"
    });
});

Bartender.sync({force: true}).then(function () {
  // Table created
  return Bartender.create({
    firstName: 'John',
    lastName: 'Hancock',
    barId: 1
  });
});

Bar.findOne({include:[Bartender]}).then(function(bar){
    console.log("-----------------");
    console.log(JSON.stringify(bar));
});

Bartender.findOne({include: [Bar]}).then(function(bartender){
    console.log("-----------------");    
    console.log(JSON.stringify(bartender));
})