Needing A Database Design Book I am designing a database and it has so many relationships among my tables and i need a book that teaches database design very well.I am looking for a book where table relationships simple and complex has been covered extensively and maybe case studies in the book.
Both of these guys authored several books, but I'm going to link to their blogs in case you want something more immediate.

Louis Davidson: http://drsql.org
Paul Nielsen: http://www.sqlserverbible.com/