Consider the library database of Figure 3.20.Write the following queries in SQL.

a. Find the member number and name of each member who has borrowed at least one book published by “McGraw-Hill”.

b. Find the member number and name of each member who has borrowed every book published by “McGraw-Hill”.

c. For each publisher, find the member number and name of each member who has borrowed more than five books of that publisher.

d. Find the average number of books borrowed per member. Take into account that if a member does not borrow any books, then that member does not appear in the borrowed relation at all, but that member still counts in the average.

 Figure 3.20

Transcribed Image Text:

member(memb_no, name) book(isbn, title, authors, publisher) borrowed (memb_no, isbn, date)