A list consists of last names, first names, address and pin codes if all people in the list have the same last and the same pin code, a useful key would be
A. The pin code
B. The last name
C. A compound key consisting of the first name and the last name
D. All of the above
Answer:C
A list consists of last names, first names, address and pin codes if all people in the list have the same last and the same pin code, a useful key would be
A. The pin code B. The last name C. A compound key consisting of the first name and the last name D. All of the above