Business Finance Homework Help
Design Use and Implementation of Databases in Organizations Questions
1) An attribute that can be calculated from related attribute values is called a ____ derived
____ attribute.
A) simple
B) composite
C) multivalued
D) derived
2) The number of entity types that participate in a Unary relationship is:
A) zero.
B) one.
C) two.
D) three.
3) A relationship where the minimum and maximum cardinality are both one is a(n)
________ relationship.
A) optional
B) unidirectional
C) mandatory link
D) mandatory one
4) The process of defining one or more subtypes of a supertype and forming relationships is
called:
A) specialization.
B) generalization.
C) creating discord.
D) selecting classes.
5) The ________ rule states that an entity instance can be a member of only one subtype.
A) disjoint
B) overlap
C) partial specialization
D) total specialization
