Hi ,I created a lot of fields in model.py for inherit but i hadn't got any model in database after inherit from openeducat admission, I depend app from Technical Name and inherit from exiting models but after restart and update there is no models  in database.Please ,Help me  and Give me some advices . Thank you.. Models and Openerp.py are below..

model.py

from openerp import models, fields

class st_admission(models.Model):

_inherit = 'op.admission.register'

sex = fields.Selection([('male','Male'),('female','Female')], 'Sex', required=True),

current_age = fields.Integer('Current Age'),

prf_name = fields.Char('Preferred Name'),

birthday = fields.Date('Date of Birth'),

anti_enroll_date = fields.Date('Anticipated Enrollment Date'),

last_grade = fields.Char('Last Grade Completed'),

anti_grade_enter = fields.Char('Anticipated Grade To Enter'),

passort = fields.Char('Passort #', help='If a child has dual citizenship, provide additional passport information'),

country = fields.Char('Country for Passport'),

exp_date = fields.Date('Expiration Date for Passport'),

nrc_no = fields.Char('NRC'),

type_visa = fields.Selection([('debit','Debit Card'),('credit','Credit Card')], 'Type of Visa Held', required=True),

religion = fields.Char('Religion'),

nationally = fields.Char('Nationally'),

is_myanmar = fields.Selection([('yes','YES'),('no','NO')], 'Myanmar_citizen?'),

home_language = fields.Char('Home Language'),

oth_language = fields.Char('Other Language'),

current_address = fields.Text('Current Residence Address'),

home_phone = fields.Integer('Home Phone', required=True),

home_fax = fields.Integer('Home Fax'),

email = fields.Char('Email', required=True),

emergency_phone = fields.Integer('Emergency  Contant Phone', required=True),

__openerp__.py files

{ 

    'name': 'Advance for addmissions', 

    'version': '1.0',

    'description': 'Add more information for Addmissions.',

    'author': 'Hannay Oo', 

    'depends': ['openeducat_admission'], 

    'data': [

        'views/admission.xml',        

        ],

    'application': True,

    'installable': True, 

}