Homework Solution: I need help with this assignment. Please use assignment operator for each question and explain w…

    I need help with this assignment. Please use assignment operator for each question and explain why the answer is what it is. Consider a library database with the following schema (where primary keys are in parenthesis): 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, children’s 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 pts) Find the ISBN and title of all the books authored Arthur Miller. (8 pts) List the bookID and title of all the books that are currently checked out by John Smith. Do not use any natural join in this query. (8 pts) Find the first name and last name of the members who are either currently borrowing book “Da Vinci Code” or have borrowed it in the past. (6 pts) Find the memberID, first name, and last name of the members who have never borrowed any books. (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 Miller’s books. (5 pts) Find the total number of books for each category (write a single query for this question).

    Expert Answer

    1. SELECT ISBN,title FROM Book

    I insufficiency succor with this enactment. Please right enactment operator ce each investigation and expound why the repartee is what it is.

    Consider a library database with the coercionthcoming schema (where primitive keys are in parenthesis):

    Book( (bookID), ISBN, denomination, doer, publish-year, kind)

    Member((memberID), (lastname), (firstname), discourse, phone-number, word)

    CurrentLoan((memberID), (bookID), loan-date, due-date)

    History((memberID), (bookID), (loan-date), return-date)

    Members can attribute bulks from the library. The sum of bulks they can attribute is worded by the “limit” arena of the Member aspect. The kind of a bulk includes creation, non-fiction, children’s and intimation. The CurrentLoan board represents the instruction encircling bulks that are currently checked extinguished. When the bulk is returned to the library, the chronicles succeed be removed from CurrentLoad aspect, and succeed be inserted into History aspect with the return-date. A library may hold late than undivided delineation of the similar bulk, in which event each delineation has its hold bulkID, still perfect copies divide the similar ISBN.

    Express each of the coercionthcoming tasks in relational algebra.

    (5 pts) Find the ISBN and denomination of perfect the bulks doered Arthur Miller.

    (8 pts) List the bulkID and denomination of perfect the bulks that are currently checked extinguished by John Smith. Do referable right any true associate in this interrogation.

    (8 pts) Find the original indicate and latest indicate of the members who are either currently attributeing bulk “Da Vinci Code” or hold attributeed it in the late.

    (6 pts) Find the memberID, original indicate, and latest indicate of the members who hold never attributeed any bulks.

    (8 pts) List the original and latest indicates of members who hold attributeed (either currently or in the late) perfect the bulks in the library that are doered by Arthur Miller. If some bulks doered by Arthur Miller hold multiple copies, he or she must hold attributeed at smallest undivided delineation of each of Arthur Miller’s bulks.

    (5 pts) Find the whole sum of bulks ce each kind (transcribe a uncombined interrogation ce this investigation).

    Expert Repartee

    1.

    SELECT ISBN,title

    FROM Bulk

    WHERE doer = ‘Arthur Miller’

    2.

    SELECT Bulk.bookID, Bulk.title

    FROM Bulk,Member,CurrentLoan

    WHERE (Member.firstindicate = ‘John’ AND Member.lastindicate = ‘Smith’ and Member.memberID = CurrentLoan.memberID)

    3.

    SELECT bulkID as id

    FROM Bulk

    WHERE denomination = ‘Da Vinci Code’

    SELECT Member.firstname, Member.lastname

    FROM Member, Bulk, CurrentLoan, History

    WHERE (CurrentLoan.memberID = Member.memberID AND History.memberID = Member.memberID AND CurrentLoan.bookID = id AND History.bookID = id)

    4.

    SELECT memberID,firstname,lastname

    FROM Member

    NATURAL LEFT JOIN History

    WHERE loan-date IS NULL