Some email programs let you use a ____ to move incoming mail to a specific folder or to delete it automatically based on the content of the message.?

Most writing styles limit a footnote to a single sentence

Indicate whether the statement is true or false

Discuss the differences between the candidate keys and the primary key of a relation. Explain what is meant by a foreign key. How do foreign keys of relations relate to candidate keys? Give examples to illustrate your answer.

What will be an ideal response?