Relationship Sets >A relationship is an association among several entities Example 44553(Peltier advisor 22222 Einstein student entity relationship set instructor entity >A relationship set is a mathematical relation among n>2 entities, each taken from entity sets {e1,e2,en)le1∈卫1,e2∈卫2,…,en∈ Eny where(e1, e2,..., en)is a relationship Example (44553,22222)∈ advisorRelationship Sets ➢A relationship is an association among several entities Example: 44553 (Peltier) advisor 22222 (Einstein) student entity relationship set instructor entity ➢A relationship set is a mathematical relation among n  2 entities, each taken from entity sets {(e1, e2, … en) | e1  E1, e2  E2, …, en  En} where (e1, e2, …, en) is a relationship Example: (44553,22222)  advisor