Relations are Unordered Order of tuples is irrelevant(tuples may be stored in an arbitrary order) Example:account relation with unordered tuples account_number branch_name balance A-101 Downtown 500 A-215 Mianus 700 A-102 Perryridge 400 A-305 Round Hill 350 A-201 Brighton 900 A-222 Redwood 700 A-217 Brighton 750 Database System Concepts-5th Edition,Oct 5,2006 28 ©Silberschat乜，Korth and SudarshanDatabase System Concepts - 5 2.8 ©Silberschatz, Korth and Sudarshan th Edition, Oct 5, 2006 Relations are Unordered Order of tuples is irrelevant (tuples may be stored in an arbitrary order) Example: account relation with unordered tuples