Author Question: Which of the following would be the correct syntax for a WHERE clause to return all the NULL values ... (Read 54 times)

dakota nelson · **on:** Jul 7, 2018

Which of the following would be the correct syntax for a WHERE clause to return all the NULL values in the CustomerPhone column?

A) WHERE CustomerPhone=NULL
B) WHERE CustomerPhone < NULL
C) WHERE CustomerPhone IS NULL
D) WHERE CustomerPhone IS NOT NULL

Question 2

__________ provides confidentiality using symmetric encryption and message integrity using a message authentication code.

What will be an ideal response?