Section 4

Question 1

Cardinality

Answer 1

Refers to maxima and minima of relationships and attributes

Question 2

Relationship Maximum

Answer 2

The greatest number of instances of one entity that can relate to a single instance of another entity.

Question 3

Relationship Minimum

Answer 3

the least number of instances of one entity that can relate to a single instance of another entity.

Question 4

Identifying Attribute

Answer 4

is unique, singular, and required.

Question 5

Weak entity

Answer 5

Has an identifying relationship to an identifying entity.