________ in an E-R diagram refer to the least number of entities required in a relationship.
A)Minimum candidate keys
B)Primary keys
C)Foreign keys
D)Minimum cardinalities

Question

Quizplus · Accepted Answer

Minimum cardinalities refer to the least number of entities required in a relationship. Minimum candidate keys refer to the minimum set of attributes required to uniquely identify an entity, primary keys refer to the chosen candidate key for the entity, and foreign keys refer to attributes that reference the primary key of another entity.

________ in an E-R Diagram Refer to the Least Number