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Nigeria Since27 May, 2024
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Posted By adaragrace
5 months ago
STAR SCHEMA AND SNOWFLAKE SCHEMA AND THEIR DIFFERENCES.

In SQL, when designing data warehouses and business intelligence solutions, two common schema designs are used to organize fact and dimension tables:STAR SCHEMA.- One central fact table.- Multiple dimension tables connected directly to the fact table.- Each dimension table is connected to the fact table through a foreign key.- Resembles a star shape, with the fact table at the center.Example:Fact...

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Posted By adaragrace
5 months ago
FACTS AND DIMENSION TABLES

In SQL, when working with data warehousing and business intelligence, two essential types of tables are used to organize and analyze data:FACT TABLES.- Contain measurable data (facts) about a business process or event.- Typically have numerical values (e.g., sales amounts, quantities, dates).- Examples: sales data, order data, customer behavior data.DIMENSION TABLES.- Contain descriptive data (att...

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