Discussion Forum : Introduction To Database System
Question - A list consists of last names, first names, addresses, and pin codes if all people in the list have the same last and the same pin code, a useful key would be
Options:
A .  All of these
B .  the pin code
C .  the last name
D .  a compound key consisting of the first name and the last name
E .  None of these
Answer: Option D
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