This University Registration Office School ER Diagram only has one-to-many relationships: one artist can create many albums, one album can contain many tracks, and one track can be played many times. In contrast, each play is associated with a single track, album, and artist. The attributes are straightforward: artists, albums, and trails have names and identifiers that allow each entity to be uniquely identified. The time attribute on the track entity stores the duration, and the timestamp on the played entity stores when the track was played.
