I'm trying to learn OpenERp code logic... I would like to write a new module, and need a new model created..

This is res_certificates.py code

from openerp.osv import fields, osv, orm
class res_certificates(osv.Model):
    _name='res_certificates'
    _description='Stored Certificates'
    _order='name'
    _columns = {
        'name': fields.char('Name', size=128, help="Internal name for certificate", reguired=True, select=True),
        'cert': fields.text('Certificate', help='Certificate (text)') ,
        'cert_password': fields.char('Certificate Password', size=64),
        'cert_key': fields.text('Private Key', help="Private key for user"),
        'key_password':fields.char('Private Key Password', size=64)

        }

res_certificates()

called from __init__.py as

import res_certificates

does not create any table table (note: at the moment i just need the table. no views) working on v7.0

If anyone could tell me what am i missing here??