8 Relationship Set The current “value” of an entity set is the set of entities that belong to it. Example: the set of all bars in our database. The “value” of a relationship is a set of lists of currently related entities, one from each of the related entity sets. 9 Examp...
18 One-One Relationships uIn a one-one relationship, each entity of either entity set is related to at most one entity of the other set. uExample: Relationship Best-seller between entity sets Manfs (manufacturer) and Beers. wA beer cannot be made by more than one manufacturer, and no man...