What is the major of computer science and technology (financial information service direction) and how is it?

At least learn:

Data structure, computer composition, various operating systems, database systems, computer software design, basic programming languages such as VB, Java, c++, assembly language, advanced mathematics, English II,

Now is the age of data and information. For finance, big data is nothing more than the foundation. It is very important to have massive data for research, development and analysis. But with a large amount of data, it is necessary to store the data, so the database system will be an important course, and the employment prospects are still relatively optimistic.