Database Administrator Mock Interview

Master 25 Database Administrator interview questions covering SQL optimization, backup strategies, and security protocols.

Question 4 of 25

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

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William Swansen

William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.

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.

William Swansen

"User-defined database functions are created to perform a specific task designated by the programmer. They are used as a mechanism for extending the functionality of the database. The function is evaluated in a standard query language (SQL) statement. An example is creating a function that will take an array of elements and return the sum for all of them."

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