Problem
1. Summarize the problems with operational databases that limit their usefulness for BI applications.
2. What is an ETL system, and what functions does it perform?
3. What problems in operational data create the need to clean data before loading the data into a data warehouse?
4. What does it mean to transform data? Give an example other than the ones used in this book.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.