How write down to database multiple authors in simple books table?

Question

I am wondering how should I save authors (in case where there are more than one author) in simple database.

In case one one book has one authors, everything is easy. The

Answer 1

You need another table called BookAuthor, you don't need the Authors column in Books

BookAuthor
------------
BookID
AuthorID

Where the BookID references the PK (BookID) on Books and AuthorID references PK (AuthorID) on Authors

Select b.Title, CONCAT(a.[First Name], a.[Last Name]) As AuthorName
From Books b
JOIN BookAuthor ba ON b.ID = ba.BookID
JOIN Authors a ON ba.AuthorID = a.ID