Imagine that you are a system analyst for a bookstore. You are designing a system to sell books, CDs, and DVDs online. Using what you learned about data management layer design, address the following : 1.which object-oriented-persistence format is best for this this system? 2. how do the problem- domain classes map to the selected format? 3.what techniques would best optimize the design's processing efficiency? 4. what do you need to consider when you design the data access and manipulation (DAM) classes for the system? Create one DAM class as an example. 5. explain each of your recommendations and justify the design choiced