Exercise 2: Where a Product's Data Actually Lives — Possible Solution
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TITLE AND DESCRIPTION
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Per this chapter, a product's title and description are stored
exactly the way any post's title and content are stored: as columns
on a row in the wp_posts table, with post_type set to 'product'
instead of 'post' or 'page'. This is the direct result of WooCommerce
calling register_post_type('product', ...) - the same registration
mechanism WordPress Intermediate/Advanced 4 covered for any custom
content type.

PRICE AND SKU
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Per this chapter, price, SKU, and stock quantity are not columns on
wp_posts at all - they're stored as post meta, in the wp_postmeta
table, keyed to the product's post ID. This is the identical
mechanism WordPress Intermediate/Advanced 4 already covered for
adding custom fields to any post type; WooCommerce doesn't invent a
new storage mechanism for this data, it just uses a large, defined
set of meta keys (like _price and _sku) on top of the existing
system.

THE TWO TABLES
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wp_posts (title, description/content) and wp_postmeta (price, SKU,
stock, and other product-specific fields).

WHY THIS WORKS AS AN ANSWER
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It correctly separates the two categories of product data, names the
specific table each lives in, and explicitly ties both back to the
exact custom-post-type and custom-field mechanisms already taught in
WordPress Intermediate/Advanced 4, rather than treating WooCommerce's
storage as something new.