250 words+ Topics: 1. You already study database for a Spring term. So based on your study, can you design a new database system with your own rationale.  (for this question, you do not need to develop a real one; just giving some of your thought, highlight, or as you starting to design a new database system, what kind of oriented, what kind of application, or possible approaching,...etc; an open question) 2. Why is NoSQL become another important approaching for database and occupied a lot of marketing?