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In dbt, what is the primary benefit of using a multi-source fan-in pattern when combining data?

easy🧠 Conceptual Q1 of 15
dbt - Advanced Patterns

In dbt, what is the primary benefit of using a multi-source fan-in pattern when combining data?

AIt splits a large table into smaller, source-specific tables.
BIt automatically creates indexes on all source tables.
CIt duplicates data across multiple models for redundancy.
DIt consolidates data from multiple sources into a single, unified model.
Step-by-Step Solution
Solution:
  1. Step 1: Understand multi-source fan-in

    This pattern is used to combine data from multiple source tables or models.
  2. Step 2: Purpose in dbt

    It helps create a single, unified dataset that aggregates or merges data from various sources.
  3. Final Answer:

    It consolidates data from multiple sources into a single, unified model. -> Option D
  4. Quick Check:

    Combining multiple sources into one model [OK]
Quick Trick: Multi-source fan-in merges data into one model [OK]
Common Mistakes:
MISTAKES
  • Confusing fan-in with data duplication
  • Thinking it splits data instead of merging
  • Assuming it creates indexes automatically

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