| 118 | | {{{R ∉ 2NF}}}: The candidate key of R is: |
| 119 | | |
| 120 | | **K = {order_id, product_id, artist_id, song_id, modification_id, album_id}** |
| 121 | | |
| 122 | | {{{#!div style="text-align: justify; width: 100%;" |
| 123 | | Since K is a composite key, we must check for partial functional dependencies in order to determine whether R satisfies 2NF. |
| 124 | | }}} |
| | 118 | {{{R ∉ 2NF}}}: Since candidate key of R: **K = {order_id, product_id, artist_id, song_id, modification_id, album_id}** is a composite key, we must check for partial functional dependencies in order to determine whether R satisfies 2NF. |