Discussion 1Explain the difference between good and bad table structures. How do you recognize the difference between good and bad structures? What role does normalization play in good and bad table structures, and why is normalization so important to a good table structure?Discussion 2What is the importance of data validation? How can we avoid data-entry errors? How can forms help us reduce data-entry errors? What features does Access offer to help validate data? What are the different kinds of validations that are required?