A(n) ____ is a system-generated primary key that is usually hidden from users.
A) weak entity
B) surrogate key
C) natural key
D) artificial key
Correct Answer:
Verified
Q35: A column that you create for an
Q36: A natural key is also called a(n)_
Q37: A relationship that is necessary for identification
Q38: Independent entities have _ in an E-R
Q39: A set of requirements that is necessary
Q41: In the _ design method,specific user requirements
Q42: On an E-R diagram,the number closest to
Q43: During the _ design,designers must consider the
Q44: _ means that an entity has a
Q45: An entity that exists to implement a
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