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Practice

Data modeling workout

⭐ beginner~40 min of coding4 challenges

Order statuses, shipments, points, and batches — enums, records, and value semantics under discriminating tests.

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What you will practice

  1. Order status flow⭐ beginner
  2. Money as a record⭐ beginner
  3. Shipment with enum + record⭐ beginner
  4. Value vs reference: the batch⭐ beginner

Need the concept first? Re-read the lesson.