Apply all steps of conceptual and logical database design on the following requirements: 
The system should be able to store a customer’s name, address, and contact information and a book’s ISBN, publisher, authors, and title information. A customer should be able to purchase one or many books at a time. The system should store the purchase record of customers. It should give us the information in which shelf the book is lying by storing the shelf’s number, floor, and category information. Books are supplied by suppliers. They are stored in the stock. Number of books are deducted from the stock quantity as they are sold. Additional books are demanded from suppliers by looking at the stock record.