No person, whether subject to the payment of a tax or not, shall engage in any business or activity in the city for which a fee or tax is imposed by this chapter without having first obtained and being the holder of a valid and subsisting license to do so, known as a business license, issued under Chapter 5.04, Business Licenses. Business licenses shall be issued in accordance with Chapter 5.04. (Ord. 1068-12 § 2).