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Facts and Dimension Tables Properties

SQLmedium0.3 min readPremium
Frequency
Low
Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Nagarro
Key Concepts Tested
partition
Expert AnswerPremium
56 wordsInterview-ready
**Fact properties**: Additive/semi-additive measures; clear grain; FKs to dims; time-series; often partitioned. **Dimension properties**: Descriptive; SCD Type 1 or 2; role-playing (same dim, different roles). **Grain is critical**: One row per order vs. per line-item = different measures. **Trade-off**: Mixed grain in one fact = wrong aggregations....
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