if not Exists(SELECT * FROM information_schema.tables where Table_name = 'CallerIdRing')
begin
	create table CallerIdRing
	(
		ID	int Primary key identity(1,1),
		Peo_ID	int references People(ID) null,
		PhoneNumber	nvarchar(20),
		TarikhSabt	int not null,
		SaatSabt	int not null
	)
end