PayPal Database Engineer interview questions

Very quick and precise interview process. Very well organized as compared to most of the companies these days, where panel's does not show up or indifferent to the interview process. 3 Other members in the panel other than the hiring manager. First interviewer: Specific questions about data migration strategy. Big data. SQL/NoSQL DB. New initiative and relevant experience to these technologies. Second interviewer: Business system analysis, data modelling, Situational analysis. Third interviewer: ETL, Architecture, SQL, Process design.