Which key accepts multiple NULL values?
A. Foreign Key
B. Unique Key
C. Primary Key
D. None of the Mentioned
Answer:A
Which key accepts multiple NULL values?
A. Foreign Key B. Unique Key C. Primary Key D. None of the Mentioned
Explanation: A foreign key is a key used to link two tables together. This is sometimes called a referencing key.Foreign Key is a column or a combination of columns whose values match a Primary Key in a different table.