What you call business management is actually business management. You should think about the management of enterprises from the perspective of actual combat. The graduates of normal schools are developing in the direction of application. On the content comparison, I don't know what you are talking about. From a professional point of view, I really don't know what this covers. As for marketing, it mainly focuses on sales. If it is an ordinary class, it is strong in theory and poor in actual combat, but if it is a master, it will leave the enterprise. The latest management science is the direction of marketing in actual combat, but it is different from business management in that business management pays more attention to management, while enterprise management pays more attention to management and starts from the market. Personally, I feel more authoritative, comprehensive and practical. As for starting catering, I believe it is of little significance to learn these theories in formal places. If you want to learn correspondence or adult education, you can suggest learning marketing.