Reviewed by Aditya Kumar · Last reviewed 2026-03-24
Architectural approach: Data Flow or Lookup + Join. Quality: (1) Validation—filter nulls, invalid ranges. (2) Deduplication—Surrogate Key, Window. (3) Conform types. (4) Error handling—reject table for bad rows. Flow: Multiple sources → Join → Filter invalid → Dedupe → Sink....
Architectural approach: Data Flow or Lookup + Join. Quality: (1) Validation—filter nulls, invalid ranges. (2) Deduplication—Surrogate Key, Window. (3) Conform types. (4) Error handling—reject table for bad rows. Flow: Multiple sources → Join → Filter invalid → Dedupe → Sink. Best practice: Define quality rules; reject table; log metrics; validate before merge.
Red Flag: Merging without dedup or validation. Pro-Move: 'We use Surrogate Key + Window for dedupe; bad rows to reject table—we track reject rate in dashboard.'
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