2. Emerging topics: e-commerce, customer management, salary management, performance management, etc. Suitable for people with strong self-study ability.

3. Design an enterprise's information management system, financial management system and personnel management system.

4. It's the same as 3, but it needs not only design but also implementation, that is, making one with the learned programming language (the code in the text counts words ...).

3 and 4 are more suitable for professional knowledge. All right.

Just graduated, undergraduate, wrote 4. (Words give me a headache ...)