Question
I need help with this assignment!! Consider a library database with the following schema (where primary keys are underlined): Book(bookID, ISBN, title, author, publish-year, category)
I need help with this assignment!!
Consider a library database with the following schema (where primary keys are underlined):
Book(bookID, ISBN, title, author, publish-year, category)
Member(memberID, lastname, firstname, address, phone-number, limit) CurrentLoan(memberID, bookID, loan-date, due-date)
History(memberID, bookID, loan-date, return-date)
Members can borrow books from the library. The number of books they can borrow is limited by the limit field of the Member relation. The category of a book includes fiction, non-fiction, childrens and reference. The CurrentLoan table represents the information about books that are currently checked out. When the book is returned to the library, the record will be removed from CurrentLoad relation, and will be inserted into History relation with the return-date. A library may have more than one copy of the same book, in which case each copy has its own bookID, but all copies share the same ISBN.
Express each of the following tasks in relational algebra.
(5) (8 pts) List the first and last names of members who have borrowed (either currently or in the past) all the books in the library that are authored by Arthur Miller. If some books authored by Arthur Miller have multiple copies, he or she must have borrowed at least one copy of each of Arthur Millers books.
(6) (6 pts) For each member, find the total number of books currently being checked out (write a single query for this question)
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