The Example Application

Suppose a radio station wants to have a database of classical music recordings for use by the program director and announcers. The station needs this information to plan a schedule of broadcasts, to maintain a log of what is played, and to publish a monthly listener guide. Here is some of the information that will be needed:

We will call these items attributes. They tend to fall into different categories. Some pertain to albums, some to specific selections, and others relate to when the selection is played. Before the database can be created, the attributes must be organized into logical entities.