What is the difference between conceptual, logical, and physical data models?
Explain normalization vs. denormalization with examples.
Discuss types of relationships (1:1, 1
What are slowly changing dimensions (SCDs) in dimensional modeling?
Compare star schema vs. snowflake schema.
What is a surrogate key vs. a natural key?
What is the difference between conceptual, logical, and physical data models?
Explain normalization vs. denormalization with examples.
Types of relationships (1:1, 1
What are slowly changing dimensions (SCDs) in dimensional modeling?
Star schema vs. snowflake schema.
What is a surrogate key vs. a natural key?
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