How it works
- Fact table: Contains information about metrics or measures
- Dimension tables: Contain information about descriptive attributes, such as products, people, places, and time
- Key columns: Unique identifiers in dimension tables that support filtering and grouping data
- Easy to understand and analyze
- Optimized for querying large data sets
- Ideal for cloud data warehousing and business intelligence applications
- Denormalized structure can lead to data redundancy and quality issues
- Data must be carefully processed and verified to ensure integrity and reliability
- Not a good fit for applications such as online transaction processing
Star schemas are based on a relational database schema. They're a widely accepted standard for the underlying table structure of a data warehouse.