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Real-World Scenario: Duplicate Customers Are Being Created During Integration. How Would You Prevent This?

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I would use multiple layers of protection:

  • Create Alternate Keys using Customer Number or Email
  • Implement Duplicate Detection Rules
  • Use Upsert Operations instead of Create
  • Validate data before insertion
  • Implement integration error handling

Architect Perspective:

Alternate Keys combined with Upsert operations are generally the preferred enterprise solution because they ensure idempotent integrations.

Follow-up Question:

Q: Why is Upsert preferred?

A: Because it updates existing records when found and creates new records only when necessary, preventing duplicate data.