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Source documents sometimes lack a 'tax_id' field. How should the schema treat it to avoid fabrication?

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Answer: B

A required field on possibly-absent data pressures the model to invent a value. Nullable/optional fields let it correctly return null.

جو ڈیٹا شاید موجود ہی نہ ہو، اسے 'لازمی' خانہ بنا دینا ماڈل پر قدر گھڑنے کا دباؤ ڈالتا ہے۔ خانے کو optional/nullable رکھیں تاکہ وہ درست طور پر null دے سکے۔

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