1.) EBay stores data about customers, products, customer interest fields, price of items, type of items, etc.
Walmart.com stores data about customers, products, price range, item type, etc.

2.) If a university wanted to keept track of course offerings, it could first order the classes by department. Then in every department,
the professors could be listed, and then what type of course the professor teaches. Finally, the location of the classroom could be stored.

3.) The relationship between professor 1 -> inf course can be one-to-many because a professor could teach many different courses. Couses to professor can be inf -> inf because
many professor can teach a certain course or courses. The classroom can be one-to-many for professor or course.

4.) To keep track of a radio station's record collection, a database would contain artist, track name, release date, date last played, number of plays, and number of requests if offered.

5.) Query results and tables are different in that tables are made to organized information and do not have set limitations applied. A query orders certain information
 or desired information instead of listing every item.