Question
ETL stands for:
More Data Warehousing Questions
- A snowflake schema differs from a star schema mainly because:
- In a star schema, what is the main advantage of using surrogate keys in fact tables?
- Which of the following is used to maintain information about the structure of a data warehouse?
- Which schema uses multiple fact tables sharing dimension tables?
- Which type of slowly changing dimension (SCD) preserves full history by adding a new row for each change and using effective date ranges?
- What is the result of SELECT COALESCE(NULL, NULL, 5, 10);?
- What is a 'star schema' in data warehouse design?
- In OLAP, “Slice and Dice” means:
- In a snowflake schema of a data warehouse, which of the following consequences is most likely as a result of normalization of dimension tables?
- A surrogate key is:
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