Constraints(c。nt) A B B (b) One to one One to many Note: Some elements in A and B may not be mapped to ar elements in the other set Database System Concepts 2.11 @Silberschatz, Korth and SudarshanDatabase System Concepts 2.11 ©Silberschatz, Korth and Sudarshan Constraints (Cont.) One to one One to many Note: Some elements in A and B may not be mapped to any elements in the other set