d nereview Flashcards
1
Q
consists of one or more attributes that can uniquely identify each instance of the entity.
A
Identifiers
2
Q
Associations between entities
A
Relationships
3
Q
Connected by a line
A
Relationships
4
Q
Given active verb names
A
Relationships
5
Q
refers to the number of times instances in one entity can be related to instances in another entity.
A
Cardinality
6
Q
refers to the minimum number pf times that an instance in one entity can be related to an instance in another entity.
A
Modality
7
Q
means that an instance in the related entity must exist for an instance in another entity to be valid.
A
One
8
Q
means that no instance in the related entity is necessary for an instance in another entity to be valid.
A
Zero
