A bookshop intends to set up a database containing information about its books. Here are some facts that have been determined during the requirements analysis phase. 4. The bookshop records details of each book such as the title, which may not be unique, the authors, the date of publication (month and year), the number of copies in the bookshop, the acquisition price and the selling price. The bookshop also maintains basic biographical details concerning authors such as the name, date of birth, and other relevant information. Books are displayed for sale in sections, each of which has a name indicating the general subject of the book (e.g., Computer Science, Biology, etc.) and other relevant information such as size (surface area). Each section is supervised by one or more members of staff. You are asked to design a conceptual data model for the application and describe your model using a single ER diagram in UML