official solution manual for the book obtained right through https://inspectioncopy.elsevier.com/book/details/9780120884780
This volume is an instructor’s manual for the 6th edition of Database System Concepts by Abraham Silberschatz, Henry F. Korth …
This manual provides complete solutions to the end-of-chapter exercises for Foundations of Astrophysics by Barbara Ryden and Bradley M. Peterson, …
Even though the manual says "draft edition", this is the official solution manual; it can be sneakily obtained from cambridge …