THESE ARE MY ASSIGNMENT QUETIONS : 1.2. What four main types of actions involve databases? Briefly discuss each.? 1.4.What are the responsibilities of the DBA and the database designers? 2.3.What is the difference between a database schema and a database state? 2.6.What is the difference between procedural and nonprocedural DMLs? 2.9.What is the difference between the two-tier and three-tier client/server architectures? INSTRUCTIONS :- Your answers should be 2-3 pages in length, follow the APA format, and free of grammatical and spelling errors.