Question
Data cleansing is primarily concerned with:
More Data Warehousing Questions
- Which type of schema normalizes dimension tables to reduce redundancy?
- Which process ensures data in a data warehouse is consistent and clean?
- Which clause is used to sort the results in SQL?
- Which SQL clause is used to filter records after aggregation?
- Which type of slowly changing dimension (SCD) preserves full history by adding a new row for each change and using effective date ranges?
- Which of the following is used to maintain information about the structure of a data warehouse?
- What does "drill-down" operation in OLAP do?
- Which of the following best describes a Data Warehouse?
- Which SQL keyword is used to combine results from two queries and remove duplicates?
- In a data warehouse, which type of table stores quantitative data for analysis?
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