1. List all the advantages of DBMS and then briefly explain any two advantages. 2. Briefly explain the three-schema architecture. 3. Write any three difference between Strong Entity and Weak Entity. Give examples. 4. Write any two difference between inner and outer join? Write an example SQL syntax for inner and outer join. 5. What are the three possible ways(approaches) of mapping ER diagrams into relations? Give an example relation for any one approach