app.js

var Sequelize = require(__dirname + "/../../lib/sequelize/Sequelize").Sequelize,
    sequelize = new Sequelize("sequelize_test", "root", null)

var Person = sequelize.define('person', {
  name: Sequelize.STRING
})

var Pet = sequelize.define('pet', {
  name: Sequelize.STRING
})

/*Person.hasMany('brothers', Person)
Person.hasMany('sisters', Person)*/

var fatherAssoc = Person.hasOne('father', Person)
var motherAssoc = Person.hasOne('mother', Person)
Person.belongsTo('father', Person, fatherAssoc)
Person.belongsTo('mother', Person, motherAssoc)

var petAssoc = Person.hasMany('pets', Pet)
Pet.belongsTo('owner', Person, petAssoc)

Sequelize.chainQueries([{drop: sequelize}, {sync: sequelize}], function() {
  var person  = new Person({ name: 'Luke' }),
      mother  = new Person({ name: 'Jane' }),
      father  = new Person({ name: 'John' }),
      brother = new Person({ name: 'brother' }),
      sister  = new Person({ name: 'sister' })
   
   Sequelize.chainQueries([{save: person}, {save: mother}, {save: father}, {save: brother}, {save: sister}], function() {
     person.setMother(mother, function(mom) { Sequelize.Helper.log('my mom: ' + mom.name) })
     person.setFather(father, function(dad) { Sequelize.Helper.log('my dad: ' + dad.name) })
     /*person.setBrothers([brother], function(bros) { Sequelize.Helper.log('ma bro: ' + bros[0].name)})
          person.setSisters([sister], function(sis) { Sequelize.Helper.log('ma sis\': ' + sis[0].name)})*/
   })
})