I solve problem

When I create a new model class

from odoo import fields, models

class TestModel(models.Model):

    _name = "test.model"

    _description = "Test Model"

now I created a new table name is test_model but when I open the terminal and write the following

$ psql -d rd-demo
rd-demo=# SELECT COUNT(*) FROM estate_property;
error message: 
Did not find any relation named "estate_property".
because my tabel name is test_model not estate_property
 rd-demo=# SELECT COUNT(*) FROM test_model;
this's work with me because database name is correct.