Deleting a tuple is a metadata change when the slot is marked empty and tuple bytes are left in place.

How did books become a form of mass media?

What is an important role of music in a democratic society?

Who controls much of the music business?

What is the linear model of communication?

When was the “Golden Age of Magazines” in the United States?

What is the cultural model of communication?

How has the Internet impacted journalism?

With the advent of the digital age, electronic books sell more than do hard copy books.

What is an important role of books in a democratic society?