mysql - How to optimize this database structure? -


for future project i'm planning i'll have 3 tables.

the 1st keeps track of recipe information, 2nd keeps track labels references recipe_id recipe table, 3rd table contains list of ingredients.

recipe: +---------+-----------------+-------------+ | id [ai] |  title          |  category   | +---------+-----------------+-------------+  | 20      |  italian pizza  |   dinner    | +---------+-----------------+-------------+ | 21      |  greek soup     |   lunch     | +---------+-----------------+-------------+  recipe_ingredients_label: +---------------+------------+-------------+ | label_id [ai] |  recipe_id |    label    | +---------------+------------+-------------+  | 1             |  20        |  pizza base | +---------------+------------+-------------+ | 2             |  20        |   topping   | +---------------+------------+-------------+  recipe_ingredients: +----------+------------+----------------------+ | label_id |   amount   |   ingredients        | +----------+------------+----------------------+  |    1     |   4 cups   |   cheese             | +----------+------------+----------------------+  |    1     |   3/4 cup  |   white flour        | +----------+------------+----------------------+  |    2     |   1 cup    |   mozzarella cheese  | +----------+------------+----------------------+  |    2     |   1/2 cup  |   tomato sauce       | +----------+------------+----------------------+

the recipe_ingredients references recipe_ingredients_label table, each ingredient goes under it's own label so:

pizza base contains 4 cups cheese, 3/4 cup white flour.

topping contains 1 cup mozzarela cheese, 1/2 cup tomato sauce.

the issue not recipes contains labels, i'd make labels optional based on recipe.

i thought of this:

creating recipe_id column in recipe_ingredients table, , during insertion database if no label found, reference recipe_id there instead so:

recipe_ingredients: +----------+------------+-----------------------------------+ | label_id |  recipe_id |   amount   |   ingredients        | +----------+------------+-----------------------------------+  |    1     |    null    |   4 cups   |   cheese             | +----------+------------+-----------------------------------+ |    1     |    null    |   3/4 cup  |   white flour        | +----------+------------+-----------------------------------+  |    2     |    null    |   1 cup    |   mozzarella cheese  | +----------+------------+-----------------------------------+ |    2     |    null    |   1/2 cup  |   tomato sauce       | +----------+------------+-----------------------------------+ |   null   |     21     |   2 cups   |   chicken            | +----------+------------+-----------------------------------+ |   null   |     21     |   1/2 cup  |   half carrots       | +----------+------------+-----------------------------------+ |   null   |     21     |      2     |   celery stalks      | +----------+------------+-----------------------------------+

is best way organize/optimize table performance , less data thrown on database? recommend?


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