What are user-defined database functions, and when should you go for them?

You may have already recognized this as another technical question. As a database administrator, you can anticipate a great many technical questions during the interview. The other type of questions you will be asked are operational questions, which help the interviewer to understand how you go about doing your job. Remember to keep your answer to both types of questions brief and to the point. You should anticipate follow-up questions any time you provide an answer.