First of all if you have working experience in a certain domain for 10 years so the interviewer will have a mindset that you have maximum knowledge on that domain, so obviously he will check that you are clear with your basics or not . So for this just go through some basic videos regarding data structure and brush up your skills which is required, and it wont take much time to prepare. Its not a good decision to change your career after having 10 years of experience.