How to build ManyToMany relationships in Mongodb?

Possible Duplicate:
Many-to-Many MongoDB Association

I have been using MySQL / SQLite for many years and have real problems understanding how to do relationships in MongoDB, especially ManyToMany relationships, I just don't know what is the best practice.

Ok, I have a project with company. employeemay work for several companies, and a company may have several employees. The connection table is called contracts.

namely: company -< contracts >- employees

Fields.

company: id, name

contracts: length, salary, company_id, employee_id

employee: id, name

My actual final application has 20 fields for each table, but I just saved them for now.

This is where my head starts to hurt, trying to reproduce this in Mongodb.

t

// Idea 1. Put everything in one hierarchy. 
// But, What should I be putting in contracts?
// Where does employees go?
//
// Pseduocode (based from MongoDB online browser shell)
var company = {name:'Company A', contracts:[????]};  

, . 3 , .

, , , , ?

, , ?

, MongoDB / ?

, ?

i.e: , , 10 .

, MongoDB, SQL-, , - , , ManyToMany MongoDB.

.