**Architectural Logic**: Star vs snowflake is a trade-off between join complexity and storage/normalization. **Star**: One fact table; denormalized dimensions; fewer joins. **Snowflake**: Normalized dimensions (dim→sub-dim); more joins, less redundancy. **Why Star for Swiggy**: Food delivery reporting (orders, delivery, restaurants, users) requires fast, concurrent dashboards. Star schema minimizes join depth—critical for BI tools and sub-second response....
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