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Practice

Data Practice: Parameters, Mapping, Transactions

⭐⭐ intermediate~30 min of coding3 challenges

Query through parameters only, map rows to objects, and wrap multi-step writes in a transaction.

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What you will practice

  1. The Only Safe Lookup⭐⭐ intermediate
  2. Map Rows to Objects⭐⭐ intermediate
  3. Debug: The Half-Written Transfer⭐⭐ intermediate

Need the concept first? Re-read the lesson.