Is the solution above is corrcr, if yes, could you explain why?

Thank you

Please don't use handwriting in answers, because I cannot understand it.

Pubs Database Schema author(author id, first-name, last name author pub author id, pub id, author-position) book(book.id, book-title, mon year, editor) th, pub(pub-id, title, book-id) author id in author.pub is a foreign key referencing author pub-id in author pub is a foreign key referencing pub book-id in pub is a foreign key referencing book e editor in book is a foreign key referencing author(author-id) Primary keys are underlined Pubs Database State r (author pub) (author) author id first name last name author id pub id author-position John McCarthy 2 Dennis Ritchie 2 2 D1 2 Ken Thompson Claude D1 Shannon Alan Turing G Alonzo Church 6 6 Perry White Moshe Vardi Roy Batty