Kizspy | Question: 21 (Choose 1 answer)
Regarding difference between a primary key vs. unique key, which of the following is false?
A. There can be only one unique key for a table
B. A primary key is a key that uniquely identifies each record in a table but cannot store NULL values
C. A unique key prevents duplicate values in a column and can store NULL values.
D. Only one primary key is allowed to use in a table.
