Four back-to-back 30 minute interviews. 3/4 were positive. The bad interview consisted of one question being repeated in three different ways, just to make sure that I "knew my stuff." They also tested me on more advanced SQL concepts than necessary. The last interviewer assured that the most SQL knowledge required in the position were on a beginner's level. Interviewees should understand the concept of a test case. The interview process was satisfactory and the person from HR was very polite post-interview.