Using normalization (hint: I have been having you do this all along), draw data models for the following entities. In each case, make certain that you show the attributes and identifiers.

The president of a book wholesaler has told you that she wants information about publishers, authors, and books. Publishers publish many books, but a book is published by only one publisher. If a second book comes out with the same title, assume it is a new edition of the same book, therefore technically a different book. Each author can publish many books and a book can have many authors.