Consider the library database schema containing the tables given below where primary keys are underlined.
USER (UserID, User_name, Address)USES (UserID, BookID, Issued_date, Returned_date)BOOK (BookID, Book_name, Author, PublisherID)PUBLISHER (PublisherID, Publisher_name, Address)
Specify the following queries in both SQL and Relational Algebra on this database schema:a. Retrieve names of all books issued to the user “Hari”.b. Retrieve the names of all books published by “ABC publication”.c. Count the number of books published by the author “Ram”.
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