What is a common reason for using a staging area in ETL processes?

  • To reduce data storage costs
  • To restrict access to the data warehouse
  • To speed up the reporting process
  • To store data temporarily for transformation and cleansing
A staging area in ETL processes is used to temporarily store data before it's transformed and loaded into the data warehouse. It allows for data validation, cleansing, and transformation without impacting the main data warehouse, ensuring data quality before final loading.
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