What query would help you find if a customer purchased from you more than once?

Which of the following relationships is one in which one record in either table can have many associated records in the other table?

A) One-to-one B) Many-to-one C) One-to-Many D) Many-to-many

Using the basic model of an information system as presented in Figure 6.18, suggest the components that might be part of an app for a mobile device that displays information about flights arriving and departing from a particular airport.

What will be an ideal response?