Composite attributes make it easier to facilitate detailed queries.
A weak entity has a primary key that is partially or totally derived from the parent entity in the relationship.
In the original Chen notation, each attribute is represented by an oval with the attribute name connected to an entity rectangle with a line.
Referential integrity and participation are both bidirectional, meaning that they must be addressed in both directions along a relationship.
The entity relationship model (ERM) is dependent on the database type.
Knowing the minimum and maximum number of occurrences is very helpful at the application software level.
A ___ relationship exists when an association is maintained within a single entity.
Ideally, an entity identifier is composed of ____ attribute(s).
The _ notation of entity-relationship modeling can be used for both conceptual and implementation modeling.
A. Bachman
B. UML
C. Chen
D. Crow's Foot
The entity relationship model uses the associative entity to represent a(n) _______ relationship between two or more entities.
The Crow&'s foot symbol with two vertical parallel lines indicates _____ cardinality.
A ________ has a primary key that is partially or totally derived from the parent entity in the relationship.
A ________ has a primary key that is partially or totally derived from the parent entity in the relationship.
A ___ attribute can be further subdivided to yield additional attributes.