Exercise 1: The Abandoned Cart — Possible Solution
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WHAT RECORD EXISTS IN THE ORDER LIST
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Per this chapter, none. Adding an item to the cart does not create an
order, or any row in wp_posts at all - an order only comes into
existence at the moment checkout is actually submitted. Since the
customer closed the tab before that point, no order was ever created,
and the store's admin-facing order list shows nothing for this
customer's visit.

WHERE THE CART CONTENTS WERE ACTUALLY TRACKED
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Per this chapter, cart contents are tracked as session data - for a
logged-in customer, or a guest with cookies enabled, this is persisted
specifically in WooCommerce's own dedicated wp_woocommerce_sessions
table, not in wp_posts or wp_postmeta. This session data is what held
the added item while the tab was open.

WHAT HAPPENS TO THAT SESSION DATA NOW
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Per this chapter, WooCommerce automatically expires and cleans up old,
inactive sessions after a configurable period - so this abandoned
cart's session record won't persist indefinitely either, even though
it was never converted into a real order.

WHY THIS WORKS AS AN ANSWER
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It correctly states that no order exists in this scenario, correctly
names the specific table where the cart was actually being tracked
before abandonment, and correctly notes that even that session record
doesn't last forever.