The workshop is designed to help you anticipate possible questions, review what you've learned, and begin learning how to put your knowledge into practice.
| 1: | Which PHP function was used to uppercase the category title strings? |
| 2: | Why don't the store_item_size and store_item_color tables contain any primary or unique keys? |
| A1: | strtoupper() |
| A2: | Presumably, you will have items with more than one color and more than one size. Therefore, item_id is not a primary or unique key. Also, items may have the same colors or sizes, so the item_color and item_size fields must not be primary or unique either. |