Question
Which type of slowly changing dimension (SC
- D preserves full history by adding a new row for each change and using effective date ranges?
More Data Warehousing Questions
- What is a 'star schema' in data warehouse design?
- Which clause is used to sort the results in SQL?
- Surrogate keys are used in data warehouses because:
- Which of the following is used to maintain information about the structure of a data warehouse?
- In a data cube, what does "slice" operation do?
- Which OLAP operation rotates the data axes to provide an alternative presentation?
- A snowflake schema is different from a star schema because:
- What is meant by 'cardinality' in data modeling?
- What is the primary function of ETL in a data warehouse environment?
- Which type of schema normalizes dimension tables into multiple related tables?
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