When working with SQL, if a field includes an aggregate function, you need to use a HAVING clause, which specifies the aggregated field criteria and restricts the results based on aggregated values

Matthew, Richard, and Christopher would like to exchange messages with each other using symmetric cryptography. They want to ensure that each individual can privately send a message to another individual without the third person being able to read the message. How many keys do they need?

A. 1 B. 2 C. 3 D. 6

Explain the difference between the CreateText method and the AppendText method.

What will be an ideal response?