Know the DB values (you can see them through their site), and prepare for a list of experiences in which you displayed those values. You should explain those experiences on a STAR format -- what was the Situation, the Task involved, what were your Actions to resolve, and the Results.
Get the information of the position the you're applying for. So that you have the idea incase the interviewer ask you about the position.
Be yourself. if you do not know the answer, just say it honestly