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What is the main purpose of a multi-source fan-in pattern in dbt?

easy🧠 Conceptual Q11 of 15
dbt - Advanced Patterns

What is the main purpose of a multi-source fan-in pattern in dbt?

ATo create indexes for faster queries
BTo split data into multiple smaller tables
CTo delete duplicate records from a single table
DTo combine data from multiple sources into one unified table
Step-by-Step Solution
Solution:

  1. Step 1: Understand multi-source fan-in pattern

    This pattern is used to bring together data from different tables or sources.

  2. Step 2: Identify the goal of combining data

    The goal is to create a single, unified view that contains all relevant information for analysis.

  3. Final Answer:

    To combine data from multiple sources into one unified table -> Option D

  4. Quick Check:

    Multi-source fan-in = combine data [OK]
Quick Trick: Think 'fan-in' as merging many into one [OK]
Common Mistakes:
MISTAKES
  • Confusing fan-in with splitting data
  • Thinking it deletes duplicates
  • Assuming it creates indexes

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