A violation of 1NF is repeating groups - more than one attribute from same physical and logical domain (ex. author1, author2, etc.) Some examples we have worked with hid or omitted this as a "fix" for multi-valued attributes. In PE\#2 there should have been the following: UoD: PE2 Book Tracking System Resulting Relation: BOOK(title, isbn13Number, author1, author2, author3, author4, author5, numberOfPages, releaseDate) Functional Dependencies: isbn13Number title, author1, author2, author3, author4, author5, numberOfPages, releaseDate Finish the solution that what was started below in an effort to solve the repeating group problem. Include the modified BOOK relation that would result from the addition of the BOOK_AUTHOR relation. Use proper relational notation and include reference statements for any foreign keys. Unfinished Solution: BOOK(isbn13Number, title, releaseDate, numberOfPages) BOOK_AUTHOR(isbn13Number, author) YOUR COMPLETED SOLUTION