The Music Database The music database stores details of a personal music library, and could be used to manage your MP3, CD, or vinyl collection. Because this database is for a personal collection, it’s relatively simple and stores only the relationships between artists, albums, and tracks. The following is a list of requirements: i) The collection consists of albums; ii) An album is made by exactly one artist. There must be an artist and album; iii) An artist makes one or more albums (identifying relations); iv) An album contains one or more tracks; v) Artists, albums, and tracks each have a name; vi) Each track is on exactly one album. Vii) Each track has a time length, measured in seconds. The track may or may not be played and can be played as many times as required (non-identifying relations). When a track is played, the date and time the playback began (to the nearest second) should be recorded; this is used for reporting when a track was last played, as well as the number of times music by an artist, from an album, or a track has been played. There’s no requirement to capture composers, group members or sidemen, recording date or location, the source media, or any other details of artists, albums, or tracks. Q: Where would the source of business rules come from in the above case. Identify business rules for the music database bank above.
The Music
The music database stores details of a personal music library, and could be used to manage your MP3, CD, or vinyl collection. Because this database is for a personal collection, it’s relatively simple and stores only the relationships between artists, albums, and tracks. The following is a list of requirements: i) The collection consists of albums; ii) An album is made by exactly one artist. There must be an artist and album; iii) An artist makes one or more albums (identifying relations); iv) An album contains one or more tracks; v) Artists, albums, and tracks each have a name; vi) Each track is on exactly one album. Vii) Each track has a time length, measured in seconds. The track may or may not be played and can be played as many times as required (non-identifying relations). When a track is played, the date and time the playback began (to the nearest second) should be recorded; this is used for reporting when a track was last played, as well as the number of times music by an artist, from an album, or a track has been played. There’s no requirement to capture composers, group members or sidemen, recording date or location, the source media, or any other details of artists, albums, or tracks.
Q: Where would the source of business rules come from in the above case. Identify business rules for the music database bank above.
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