Data Access · interview question
A bug appears around transactions. What is the strongest first debugging move?
Multiple choiceMediumchapter-11-curatedpremiumdata-accesstransactions
with connection:
connection.execute("INSERT INTO orders(id, subtotal_cents) VALUES (?, ?)", ("ORD-1", 8800))
connection.execute("INSERT INTO order_events(order_id, event_type) VALUES (?, ?)", ("ORD-1", "CREATED"))Answer and explanation
Correct answer
A. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.
Why
That approach is reliable because it creates evidence. Without a transaction, partial writes can leave the database telling two incompatible stories at once.
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