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 demand acceleration with this provision. Please reason provision operator control each interrogation and expound why the repartee is what it is.

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

    Book( (bookID), ISBN, appellation, originator, publish-year, kind)

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

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

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

    Members can borrow tomes from the library. The calculate of tomes they can borrow is conditioned by the “limit” arena of the Member affinity. The kind of a tome includes fable, non-fiction, children’s and completeusion. The CurrentLoan consideration represents the not attributable attributableice encircling tomes that are currently checked extinguished. When the tome is returned to the library, the annals procure be removed from CurrentLoad affinity, and procure be inserted into History affinity with the return-date. A library may avow spent than unmarried portraiture of the identical tome, in which fact each portraiture has its avow tomeID, excluding complete copies divide the identical ISBN.

    Express each of the subjoined tasks in relational algebra.

    (5 pts) Find the ISBN and appellation of complete the tomes originatored Arthur Miller.

    (8 pts) List the tomeID and appellation of complete the tomes that are currently checked extinguished by John Smith. Do not attributable attributable attributable reason any regular combine in this interrogation.

    (8 pts) Find the pristine spectry and developed spectry of the members who are either currently borrowing tome “Da Vinci Code” or avow pretended it in the spent.

    (6 pts) Find the memberID, pristine spectry, and developed spectry of the members who avow never pretended any tomes.

    (8 pts) List the pristine and developed spectrys of members who avow pretended (either currently or in the spent) complete the tomes in the library that are originatored by Arthur Miller. If some tomes originatored by Arthur Miller avow multiple copies, he or she must avow pretended at smallest unmarried portraiture of each of Arthur Miller’s tomes.

    (5 pts) Find the completion calculate of tomes control each kind (transcribe a unmarried interrogation control this interrogation).

    Expert Repartee

    1.

    SELECT ISBN,title

    FROM Tome

    WHERE originator = ‘Arthur Miller’

    2.

    SELECT Tome.bookID, Tome.title

    FROM Tome,Member,CurrentLoan

    WHERE (Member.firstspectry = ‘John’ AND Member.lastspectry = ‘Smith’ and Member.memberID = CurrentLoan.memberID)

    3.

    SELECT tomeID as id

    FROM Tome

    WHERE appellation = ‘Da Vinci Code’

    SELECT Member.firstname, Member.lastname

    FROM Member, Tome, 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