(20%) Consider the following relations for a database that keeps track of student enrollment in courses and the books adopted for each course: STUDENT (SSN, Name, Major, Bdate) COURSE (Coursett, Quarter, Grade) ENROLL (SSN, Coursett, Quarter, Grade) BOOK_ADOPTION (Courseff, Quarter, Book_ISBN) TEXT (Book_ISBN, Book_Title, Publisher, Author) First, specify the foreign keys for this schema, stating any assumptions you make. Next, populate the relations with at least 3 sample tuples, and then give an example of an insertion in the ENROLL relation that yiolates the referential integrity constraints and of another insertion that does not